diff --git a/app/controllers/workshop_ideas_controller.rb b/app/controllers/workshop_ideas_controller.rb
index 681e2fd0a..60dffd937 100644
--- a/app/controllers/workshop_ideas_controller.rb
+++ b/app/controllers/workshop_ideas_controller.rb
@@ -79,7 +79,6 @@ def destroy
 
   # Optional hooks for setting variables for forms or index
   def set_form_variables
-    @age_ranges = Category.includes(:category_type).where("category_types.name = 'AgeRange'").pluck(:name)
     @potential_series_workshops = authorized_scope(Workshop.published).includes(:windows_type).order(:title)
     @sectors = Sector.published
     @windows_types = WindowsType.all
@@ -111,7 +110,6 @@ def workshop_idea_params
       :time_hours, :time_intro, :time_minutes,
       :time_opening, :time_opening_circle, :time_warm_up,
 
-      :age_range, :age_range_spanish,
       :closing, :closing_spanish,
       :creation, :creation_spanish,
       :demonstration, :demonstration_spanish,
@@ -149,7 +147,6 @@ def workshop_idea_params
       :rhino_objective_spanish,
       :rhino_materials_spanish,
       :rhino_optional_materials_spanish,
-      :rhino_age_range_spanish,
       :rhino_setup_spanish,
       :rhino_introduction_spanish,
       :rhino_opening_circle_spanish,
diff --git a/app/controllers/workshops_controller.rb b/app/controllers/workshops_controller.rb
index 03ac9f226..886f1e0ea 100644
--- a/app/controllers/workshops_controller.rb
+++ b/app/controllers/workshops_controller.rb
@@ -188,8 +188,6 @@ def set_show
 
 
   def set_form_variables
-    @age_ranges = Category.includes(:category_type)
-                          .where("category_types.name = 'AgeRange'").pluck(:name)
     potential_series = authorized_scope(Workshop.published).includes(:windows_type)
     potential_series = potential_series.where.not(id: @workshop.id) if @workshop.persisted?
     @potential_series_workshops = authorized_scope(potential_series).order(:title)
@@ -228,7 +226,6 @@ def workshop_params
       :time_intro, :time_closing, :time_creation, :time_demonstration,
       :time_warm_up, :time_opening, :time_opening_circle,
 
-      :age_range, :age_range_spanish,
       :closing, :closing_spanish,
       :creation, :creation_spanish,
       :demonstration, :demonstration_spanish,
@@ -267,7 +264,6 @@ def workshop_params
       :rhino_objective_spanish,
       :rhino_materials_spanish,
       :rhino_optional_materials_spanish,
-      :rhino_age_range_spanish,
       :rhino_setup_spanish,
       :rhino_introduction_spanish,
       :rhino_opening_circle_spanish,
diff --git a/app/decorators/workshop_decorator.rb b/app/decorators/workshop_decorator.rb
index fb3a5ac10..102f3ff8a 100644
--- a/app/decorators/workshop_decorator.rb
+++ b/app/decorators/workshop_decorator.rb
@@ -108,21 +108,22 @@ def spanish_field_values
 
   def display_fields
     [ :objective, :materials, :optional_materials, :timeframe,
-     :age_range, :setup, :introduction, :demonstration,
+     :setup, :introduction, :demonstration,
      :opening_circle, :warm_up,
      :visualization, :creation, :closing, :notes, :tips, :misc1, :misc2
     ]
   end
 
   def display_spanish_fields
-    [
+    fields = [
       :objective_spanish, :materials_spanish, :optional_materials_spanish,
-      :age_range_spanish, :setup_spanish,
+      :setup_spanish,
       :introduction_spanish, :demonstration_spanish, :opening_circle_spanish,
       :warm_up_spanish, :visualization_spanish, :creation_spanish,
       :closing_spanish, :notes_spanish, :tips_spanish, :misc1_spanish,
       :misc2_spanish, :extra_field_spanish # :timeframe_spanish,
     ]
+    fields
   end
 
   def labels_spanish
@@ -131,7 +132,6 @@ def labels_spanish
       materials_spanish: "Materiales",
       optional_materials_spanish: "Materiales Opcionales",
       timeframe_spanish: "Periodo de tiempo",
-      age_range_spanish: "Rango de edad",
       setup_spanish: "Preparativos",
       introduction_spanish: "Introducción",
       demonstration_spanish: "Demostración",
diff --git a/app/decorators/workshop_idea_decorator.rb b/app/decorators/workshop_idea_decorator.rb
index 477d7fd89..7bc9607fe 100644
--- a/app/decorators/workshop_idea_decorator.rb
+++ b/app/decorators/workshop_idea_decorator.rb
@@ -8,13 +8,14 @@ def default_display_image
   end
 
   def display_spanish_fields
-    [
+    fields = [
       :objective_spanish, :materials_spanish, :optional_materials_spanish,
-      :age_range_spanish, :setup_spanish,
+      :setup_spanish,
       :introduction_spanish, :demonstration_spanish, :opening_circle_spanish,
       :warm_up_spanish, :visualization_spanish, :creation_spanish,
       :closing_spanish, :notes_spanish, :tips_spanish # :timeframe_spanish,
     ]
+    fields
   end
 
   def labels_spanish
@@ -23,7 +24,6 @@ def labels_spanish
       materials_spanish: "Materiales",
       optional_materials_spanish: "Materiales Opcionales",
       timeframe_spanish: "Periodo de tiempo",
-      age_range_spanish: "Rango de edad",
       setup_spanish: "Preparativos",
       introduction_spanish: "Introducción",
       demonstration_spanish: "Demostración",
diff --git a/app/models/workshop.rb b/app/models/workshop.rb
index c683b1ece..a3955f301 100644
--- a/app/models/workshop.rb
+++ b/app/models/workshop.rb
@@ -14,7 +14,7 @@ def self.mentionable_rich_text_fields
       :rhino_introduction, :rhino_opening_circle, :rhino_demonstration, :rhino_warm_up,
       :rhino_visualization, :rhino_creation, :rhino_closing, :rhino_notes, :rhino_tips,
       :rhino_misc1, :rhino_misc2, :rhino_extra_field, :rhino_objective_spanish,
-      :rhino_materials_spanish, :rhino_optional_materials_spanish, :rhino_age_range_spanish,
+      :rhino_materials_spanish, :rhino_optional_materials_spanish,
       :rhino_setup_spanish, :rhino_introduction_spanish, :rhino_opening_circle_spanish,
       :rhino_demonstration_spanish, :rhino_warm_up_spanish, :rhino_visualization_spanish,
       :rhino_creation_spanish, :rhino_closing_spanish, :rhino_notes_spanish,
@@ -97,7 +97,6 @@ def self.mentionable_rich_text_fields
   has_rich_text :rhino_objective_spanish
   has_rich_text :rhino_materials_spanish
   has_rich_text :rhino_optional_materials_spanish
-  has_rich_text :rhino_age_range_spanish
   has_rich_text :rhino_setup_spanish
   has_rich_text :rhino_introduction_spanish
   has_rich_text :rhino_opening_circle_spanish
@@ -123,7 +122,6 @@ def self.mentionable_rich_text_fields
   # Validations
   validates_presence_of :title
   # validates_presence_of :month, :year, if: Proc.new { |workshop| workshop.legacy }
-  validates_length_of :age_range, maximum: 16
   validates :rating, numericality: { greater_than_or_equal_to: 0, less_than_or_equal_to: 5 }
 
   # Nested attributes
diff --git a/app/models/workshop_idea.rb b/app/models/workshop_idea.rb
index 55a9e5b69..a0d794c9f 100644
--- a/app/models/workshop_idea.rb
+++ b/app/models/workshop_idea.rb
@@ -57,7 +57,6 @@ class WorkshopIdea < ApplicationRecord
   has_rich_text :rhino_objective_spanish
   has_rich_text :rhino_materials_spanish
   has_rich_text :rhino_optional_materials_spanish
-  has_rich_text :rhino_age_range_spanish
   has_rich_text :rhino_setup_spanish
   has_rich_text :rhino_introduction_spanish
   has_rich_text :rhino_opening_circle_spanish
diff --git a/app/services/workshop_from_idea_service.rb b/app/services/workshop_from_idea_service.rb
index 40b54ba19..9d22362ae 100644
--- a/app/services/workshop_from_idea_service.rb
+++ b/app/services/workshop_from_idea_service.rb
@@ -18,7 +18,7 @@ def call
 
   def attributes_from_idea
     workshop_idea.attributes.slice(
-      "title", "windows_type_id", "age_range", "author_credit_preference",
+      "title", "windows_type_id", "author_credit_preference",
       "time_intro", "time_closing", "time_creation",
       "time_demonstration", "time_warm_up",
       "time_opening", "time_opening_circle"
@@ -42,7 +42,6 @@ def attributes_from_idea
       rhino_objective_spanish: workshop_idea.rhino_objective_spanish,
       rhino_materials_spanish: workshop_idea.rhino_materials_spanish,
       rhino_optional_materials_spanish: workshop_idea.rhino_optional_materials_spanish,
-      rhino_age_range_spanish: workshop_idea.rhino_age_range_spanish,
       rhino_setup_spanish: workshop_idea.rhino_setup_spanish,
       rhino_introduction_spanish: workshop_idea.rhino_introduction_spanish,
       rhino_opening_circle_spanish: workshop_idea.rhino_opening_circle_spanish,
diff --git a/app/views/workshops/_show_body.html.erb b/app/views/workshops/_show_body.html.erb
index 90f3936f0..f25a24696 100644
--- a/app/views/workshops/_show_body.html.erb
+++ b/app/views/workshops/_show_body.html.erb
@@ -95,7 +95,6 @@
         <% end %>
 
         <% workshop_sections = { "Objective" => workshop.rhino_objective,
-                                 "Age range" => workshop.age_range,
                                  "Materials" => workshop.rhino_materials,
                                  "Optional materials" => workshop.rhino_optional_materials,
                                  "Suggested time frame" => workshop.time_frame_total,
@@ -155,7 +154,6 @@
         <!-- Spanish -->
         <div id="spanish-content" data-tabs-target="tabContent" class="hidden">
           <% workshop_sections_spanish = { "Objetivo" => workshop.rhino_objective_spanish,
-                                           "Rango de edad" => workshop.age_range_spanish,
                                            "Materiales" => workshop.rhino_materials_spanish,
                                            "Materiales opcionales" => workshop.rhino_optional_materials_spanish,
                                            "Setup" => workshop.rhino_setup_spanish,
diff --git a/db/seeds.rb b/db/seeds.rb
index a18c13812..a9bbf6316 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -302,7 +302,7 @@ def find_or_create_by_name!(klass, name, **attrs, &block)
 category_type_categories = [
   [ "AgeRange", "3-5" ],
   [ "AgeRange", "6-12" ],
-  [ "AgeRange", "Teen" ],
+  [ "AgeRange", "13-17" ],
   [ "AgeRange", "18+" ],
   [ "AgeRange", "Mixed-age groups" ],
   [ "AgeRange", "Family Windows" ],
diff --git a/lib/tasks/convert_age_ranges.rake b/lib/tasks/convert_age_ranges.rake
new file mode 100644
index 000000000..dd1f65306
--- /dev/null
+++ b/lib/tasks/convert_age_ranges.rake
@@ -0,0 +1,205 @@
+# frozen_string_literal: true
+
+namespace :data do
+  desc "Convert workshop age_range/age_range_spanish free-text into AgeRange categorizable_items"
+  task convert_age_ranges: :environment do
+    age_range_type = CategoryType.find_by!(name: "AgeRange")
+    all_categories = age_range_type.categories.to_a
+    categories = all_categories.index_by { |c| c.name.downcase }
+
+    cat_3_5    = categories["3-5"]
+    cat_6_12   = categories["6-12"]
+    cat_13_17  = categories["13-17"]
+    cat_18     = categories["18+"]
+    cat_mixed  = categories["mixed-age groups"]
+    cat_family = categories["family windows"]
+
+    unless [ cat_3_5, cat_6_12, cat_13_17, cat_18, cat_mixed, cat_family ].all?
+      abort "Missing AgeRange categories. Run seeds first. Need: 3-5, 6-12, 13-17, 18+, Mixed-age groups, Family Windows"
+    end
+
+    # Normalize free-text to plain lowercase string
+    normalize = lambda do |raw|
+      return nil if raw.blank?
+
+      text = raw.strip
+      text = CGI.unescapeHTML(text)         # &ntilde; -> ñ etc.
+      text = text.gsub(/<[^>]+>/, "")       # strip HTML tags
+      text = text.gsub(/\r\n|\r|\n/, " ")   # collapse newlines
+      text = text.strip.squeeze(" ")
+      text.downcase.presence
+    end
+
+    # Map a normalized age_range string to one or more Category records.
+    classify = lambda do |raw|
+      text = normalize.call(raw)
+      return [] if text.nil? || %w[0 x n/a].include?(text)
+
+      # Extract numeric bounds if present (e.g. "5-12", "6 and up", "10+")
+      low = nil
+      high = nil
+
+      if text =~ /(\d+)\s*[-–—]\s*(\d+)/
+        low = $1.to_i
+        high = $2.to_i
+      elsif text =~ /(\d+)\s*(?:to|a)\s+(\d+)/
+        low = $1.to_i
+        high = $2.to_i
+      elsif text =~ /(\d+)\s*(\+|and\s*(up|above|older)|&\s*up|years? old on up)/
+        low = $1.to_i
+        high = 99
+      elsif text =~ /(\d+)\s*(?:en adelante|para arriba|y (?:más|mas|hasta|mayores))/
+        low = $1.to_i
+        high = 99
+      elsif text =~ /(\d+)\s*(?:o más|o mas)/
+        low = $1.to_i
+        high = 99
+      elsif text =~ /(\d+)\s*up\b/
+        low = $1.to_i
+        high = 99
+      elsif text =~ /(\d+)\s*(?:años? en adelante|años? y mayores)/
+        low = $1.to_i
+        high = 99
+      end
+
+      # Keyword-based detection
+      has_adult = text.match?(/\badult|women|18\s*\+|18 and (up|older)/i)
+      has_teen  = text.match?(/\bteen|tween|13\s*[-–&]\s*(18|19|up)|14-17|13\/18/i)
+      has_child = text.match?(/\bchild|elementary|preschool|school\s*age/i)
+      has_all   = text.match?(/\ball\s*age|\bany\s*age|\bany\b|\ball\b|\bmixed|family/i)
+
+      result = Set.new
+
+      result << cat_mixed if has_all
+
+      if has_adult && !low
+        result << cat_18
+      end
+
+      if has_teen && !low
+        result << cat_13_17
+      end
+
+      if has_child && !low
+        result << cat_6_12
+        result << cat_3_5
+      end
+
+      result << cat_3_5 if text.match?(/\bpreschool\b/)
+
+      # Numeric range mapping
+      if low && high
+        result << cat_3_5   if low <= 5  && high >= 3
+        result << cat_6_12  if low <= 12 && high >= 6
+        result << cat_13_17 if low <= 17 && high >= 13
+        result << cat_18    if high >= 18 || (high == 99 && low >= 18)
+      end
+
+      # "X and up" fallback if nothing matched above
+      if result.empty? && low && high == 99
+        result << cat_3_5   if low <= 5
+        result << cat_6_12  if low <= 12
+        result << cat_13_17 if low <= 17
+        result << cat_18    if low <= 18
+      end
+
+      result.to_a
+    end
+
+    # Build a set of exact-match strings that should nil out the column.
+    # Matches any category name (case-insensitive, stripped).
+    category_names = Set.new(all_categories.map { |c| c.name.downcase })
+
+    # Check if a raw value, once cleaned, exactly matches a category name.
+    exact_match = lambda do |raw|
+      text = normalize.call(raw)
+      return false if text.nil?
+      category_names.include?(text)
+    end
+
+    comment_tag = "[AGE_RANGE_DATA]"
+
+    total = 0
+    skipped = 0
+    already_tagged = 0
+    commented = 0
+    nilled_en = 0
+    nilled_es = 0
+    unmatched = []
+
+    Workshop.where.not(age_range: [ nil, "" ]).or(
+      Workshop.where.not(age_range_spanish: [ nil, "" ])
+    ).find_each do |workshop|
+      # --- Classify from both fields (union of matches) ---
+      matched_from_en = classify.call(workshop.age_range)
+      matched_from_es = classify.call(workshop.age_range_spanish)
+      matched_categories = (matched_from_en + matched_from_es).uniq
+
+      raw_en = workshop.age_range
+      raw_es = normalize.call(workshop.age_range_spanish)
+      source_parts = []
+      source_parts << "age_range: '#{raw_en}'" if raw_en.present?
+      source_parts << "age_range_spanish: '#{raw_es}'" if raw_es.present?
+      source_label = source_parts.join(", ")
+
+      if matched_categories.empty?
+        unmatched << { id: workshop.id, age_range: raw_en, age_range_spanish: raw_es }
+        skipped += 1
+
+        # Leave a comment so staff can manually review
+        workshop.comments.create!(
+          body: "#{comment_tag} Could not auto-apply age range categories from #{source_label}. Please review and assign manually."
+        )
+        commented += 1
+      else
+        # Skip categories already assigned
+        existing_ids = workshop.categorizable_items
+                               .joins(:category)
+                               .where(categories: { category_type_id: age_range_type.id })
+                               .pluck(:category_id)
+
+        new_categories = matched_categories.reject { |c| existing_ids.include?(c.id) }
+
+        if new_categories.empty?
+          already_tagged += 1
+        else
+          new_categories.each do |cat|
+            workshop.categorizable_items.create!(category: cat)
+          end
+
+          applied_names = new_categories.map(&:name).join(", ")
+          workshop.comments.create!(
+            body: "#{comment_tag} Auto-applied age range categories: #{applied_names} from #{source_label}."
+          )
+          commented += 1
+          total += 1
+        end
+      end
+
+      # --- Nil out columns that exactly match a category name ---
+      updates = {}
+      if workshop.age_range.present? && exact_match.call(workshop.age_range)
+        updates[:age_range] = nil
+        nilled_en += 1
+      end
+      if workshop.age_range_spanish.present? && exact_match.call(workshop.age_range_spanish)
+        updates[:age_range_spanish] = nil
+        nilled_es += 1
+      end
+      workshop.update_columns(updates) if updates.any?
+    end
+
+    puts "Done! Tagged #{total} workshops."
+    puts "Comments created: #{commented}" if commented > 0
+    puts "Already tagged: #{already_tagged}" if already_tagged > 0
+    puts "Skipped (unmatched): #{skipped}" if skipped > 0
+    puts "Nilled age_range: #{nilled_en}" if nilled_en > 0
+    puts "Nilled age_range_spanish: #{nilled_es}" if nilled_es > 0
+    if unmatched.any?
+      puts "\nUnmatched values (#{unmatched.size}):"
+      unmatched.each do |u|
+        puts "  Workshop ##{u[:id]}: en=#{u[:age_range].inspect} es=#{u[:age_range_spanish].inspect}"
+      end
+    end
+  end
+end
diff --git a/spec/models/workshop_spec.rb b/spec/models/workshop_spec.rb
index 0bc1b8ed8..4ec98730d 100644
--- a/spec/models/workshop_spec.rb
+++ b/spec/models/workshop_spec.rb
@@ -38,7 +38,6 @@
     subject { build(:workshop, created_by: create(:user), windows_type: create(:windows_type)) }
 
     it { should validate_presence_of(:title) }
-    it { should validate_length_of(:age_range).is_at_most(16) }
 
     # Conditional presence validation for legacy workshops (month, year)
     context 'when legacy is true' do
diff --git a/spec/requests/workshop_ideas_spec.rb b/spec/requests/workshop_ideas_spec.rb
index 1bd7af479..140bc29d4 100644
--- a/spec/requests/workshop_ideas_spec.rb
+++ b/spec/requests/workshop_ideas_spec.rb
@@ -15,7 +15,6 @@
       created_by_id: regular_user.id,
       updated_by_id: regular_user.id,
       windows_type_id: windows_type.id,
-      age_range: "10–14",
       time_creation: 30
     }
   end
diff --git a/spec/tasks/convert_age_ranges_spec.rb b/spec/tasks/convert_age_ranges_spec.rb
new file mode 100644
index 000000000..bc0cc58c2
--- /dev/null
+++ b/spec/tasks/convert_age_ranges_spec.rb
@@ -0,0 +1,196 @@
+require "rails_helper"
+require "rake"
+
+RSpec.describe "data:convert_age_ranges" do
+  before(:all) do
+    Rails.application.load_tasks
+  end
+
+  before do
+    Rake::Task["data:convert_age_ranges"].reenable
+
+    # The has_many :comments association is added in a separate PR.
+    # Define it here so the rake task can run in isolation.
+    unless Workshop.reflect_on_association(:comments)
+      Workshop.has_many :comments, -> { newest_first }, as: :commentable, dependent: :destroy
+    end
+  end
+
+  let!(:age_range_type) { create(:category_type, name: "AgeRange") }
+  let!(:cat_3_5)   { create(:category, name: "3-5", category_type: age_range_type) }
+  let!(:cat_6_12)  { create(:category, name: "6-12", category_type: age_range_type) }
+  let!(:cat_13_17) { create(:category, name: "13-17", category_type: age_range_type) }
+  let!(:cat_18)    { create(:category, name: "18+", category_type: age_range_type) }
+  let!(:cat_mixed) { create(:category, name: "Mixed-age groups", category_type: age_range_type) }
+  let!(:cat_family) { create(:category, name: "Family Windows", category_type: age_range_type) }
+
+  def run_task
+    Rake::Task["data:convert_age_ranges"].invoke
+  end
+
+  def age_range_category_names(workshop)
+    workshop.reload.categorizable_items
+            .joins(category: :category_type)
+            .where(category_types: { name: "AgeRange" })
+            .map { |ci| ci.category.name }
+            .sort
+  end
+
+  describe "numeric range classification" do
+    it "maps '5-12' to 3-5, 6-12" do
+      workshop = create(:workshop, age_range: "5-12")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "3-5", "6-12" ]
+    end
+
+    it "maps '6-14' to 6-12, 13-17" do
+      workshop = create(:workshop, age_range: "6-14")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "13-17", "6-12" ]
+    end
+
+    it "maps '3-99' to all age buckets" do
+      workshop = create(:workshop, age_range: "3-99")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "13-17", "18+", "3-5", "6-12" ]
+    end
+  end
+
+  describe "open-ended range classification" do
+    it "maps '5 and up' across all buckets" do
+      workshop = create(:workshop, age_range: "5 and up")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "13-17", "18+", "3-5", "6-12" ]
+    end
+
+    it "maps '18+' to 18+" do
+      workshop = create(:workshop, age_range: "18+")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "18+" ]
+    end
+  end
+
+  describe "keyword classification" do
+    it "maps 'adult' to 18+" do
+      workshop = create(:workshop, age_range: "adult")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "18+" ]
+    end
+
+    it "maps 'teen' to 13-17" do
+      workshop = create(:workshop, age_range: "teen")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "13-17" ]
+    end
+
+    it "maps 'children' to 3-5, 6-12" do
+      workshop = create(:workshop, age_range: "children")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "3-5", "6-12" ]
+    end
+
+    it "maps 'all ages' to Mixed-age groups" do
+      workshop = create(:workshop, age_range: "all ages")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "Mixed-age groups" ]
+    end
+  end
+
+  describe "Spanish classification" do
+    it "maps '5 en adelante' from age_range_spanish" do
+      workshop = create(:workshop, age_range: nil, age_range_spanish: "5 en adelante")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "13-17", "18+", "3-5", "6-12" ]
+    end
+
+    it "maps HTML-wrapped Spanish value" do
+      workshop = create(:workshop, age_range: nil, age_range_spanish: "<div>18 y más</div>")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "18+" ]
+    end
+  end
+
+  describe "union of English and Spanish" do
+    it "combines categories from both fields" do
+      workshop = create(:workshop, age_range: "teen", age_range_spanish: "<p>18 y más</p>")
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "13-17", "18+" ]
+    end
+  end
+
+  describe "skipped values" do
+    it "skips '0', 'x', 'n/a'" do
+      %w[0 x n/a].each do |val|
+        workshop = create(:workshop, age_range: val)
+        run_task
+        Rake::Task["data:convert_age_ranges"].reenable
+        expect(age_range_category_names(workshop)).to eq([]), "Expected '#{val}' to be skipped"
+      end
+    end
+
+    it "skips nil/blank values" do
+      workshop = create(:workshop, age_range: nil, age_range_spanish: nil)
+      run_task
+      expect(age_range_category_names(workshop)).to eq []
+    end
+  end
+
+  describe "idempotency" do
+    it "does not duplicate categories on re-run" do
+      workshop = create(:workshop, age_range: "6-12")
+      run_task
+      Rake::Task["data:convert_age_ranges"].reenable
+      run_task
+      expect(age_range_category_names(workshop)).to eq [ "6-12" ]
+    end
+  end
+
+  describe "nilling exact matches" do
+    it "nils age_range when it exactly matches a category name" do
+      workshop = create(:workshop, age_range: "18+")
+      run_task
+      expect(workshop.reload.age_range).to be_nil
+    end
+
+    it "nils age_range_spanish when it exactly matches a category name" do
+      workshop = create(:workshop, age_range: nil, age_range_spanish: "18+")
+      run_task
+      expect(workshop.reload.age_range_spanish).to be_nil
+    end
+
+    it "does not nil age_range when value does not match a category name" do
+      workshop = create(:workshop, age_range: "5-12")
+      run_task
+      expect(workshop.reload.age_range).to eq "5-12"
+    end
+  end
+
+  describe "comments" do
+    it "creates an auto-applied comment with [AGE_RANGE_DATA] tag" do
+      workshop = create(:workshop, age_range: "6-12")
+      run_task
+      comment = workshop.reload.comments.first
+      expect(comment).to be_present
+      expect(comment.body).to include("[AGE_RANGE_DATA]")
+      expect(comment.body).to include("Auto-applied age range categories: 6-12")
+      expect(comment.body).to include("age_range: '6-12'")
+    end
+
+    it "creates an unmatched comment with [AGE_RANGE_DATA] tag" do
+      workshop = create(:workshop, age_range: "potato")
+      run_task
+      comment = workshop.reload.comments.first
+      expect(comment).to be_present
+      expect(comment.body).to include("[AGE_RANGE_DATA]")
+      expect(comment.body).to include("Could not auto-apply")
+      expect(comment.body).to include("age_range: 'potato'")
+    end
+
+    it "does not create a comment when already tagged" do
+      workshop = create(:workshop, age_range: "6-12")
+      workshop.categorizable_items.create!(category: cat_6_12)
+      run_task
+      expect(workshop.reload.comments.count).to eq 0
+    end
+  end
+end
diff --git a/spec/views/workshop_ideas/edit.html.erb_spec.rb b/spec/views/workshop_ideas/edit.html.erb_spec.rb
index 819c8a3c6..57db42f11 100644
--- a/spec/views/workshop_ideas/edit.html.erb_spec.rb
+++ b/spec/views/workshop_ideas/edit.html.erb_spec.rb
@@ -13,7 +13,6 @@
     assign(:windows_types, [])
     assign(:sectors, [])
     assign(:categories_grouped, [])
-    assign(:age_ranges, [])
     assign(:potential_series_workshops, [])
     assign(:users, User.none)
   end
diff --git a/spec/views/workshop_ideas/new.html.erb_spec.rb b/spec/views/workshop_ideas/new.html.erb_spec.rb
index 1d6d18087..2ed237b26 100644
--- a/spec/views/workshop_ideas/new.html.erb_spec.rb
+++ b/spec/views/workshop_ideas/new.html.erb_spec.rb
@@ -11,7 +11,6 @@
     assign(:windows_types, [])
     assign(:sectors, [])
     assign(:categories_grouped, [])
-    assign(:age_ranges, [])
     assign(:potential_series_workshops, [])
     assign(:users, User.none)
   end
diff --git a/spec/views/workshops/edit.html.erb_spec.rb b/spec/views/workshops/edit.html.erb_spec.rb
index c5806a0eb..0a21ec1fc 100644
--- a/spec/views/workshops/edit.html.erb_spec.rb
+++ b/spec/views/workshops/edit.html.erb_spec.rb
@@ -7,7 +7,6 @@
 
   before(:each) do
     assign(:workshop, workshop)
-    assign(:age_ranges, [])
     assign(:potential_series_workshops, [])
     assign(:windows_types, [])
     assign(:workshop_ideas, [])