dirty commit: can't get references to work correctly between any tables

app/presenters/dashboard/analyze/graph/students_by_sped.rb

@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+module Analyze
+  module Graph
+    class StudentsBySped
+      include Analyze::Graph::Column::SpedColumn
+      attr_reader :speds
+
+      def initialize(speds:)
+        @speds = speds
+      end
+
+      def to_s
+        "Students by SpEd"
+      end
+
+      def slug
+        "students-by-sped"
+      end
+
+      def columns
+        [].tap do |array|
+          speds.each do |sped|
+            array << column_for_sped_code(code: sped.slug)
+          end
+          array << Analyze::Graph::Column::AllStudent
+        end
+      end
+
+      private
+
+      def column_for_sped_code(code:)
+        CFR[code]
+      end
+
+      CFR = {
+        "special-education" => Analyze::Graph::Column::SpedColumn::Sped,
+        "not-special-education" => Analyze::Graph::Column::SpedColumn::NotSped,
+        "unknown" => Analyze::Graph::Column::SpedColumn::Unknown
+      }.freeze
+    end
+  end
+end