fix: Filter out responses that don't correspond to the grades the school serves

app/models/measure.rb

@@ -25,14 +25,14 @@ class Measure < ActiveRecord::Base
   end
 
   def student_survey_items_with_sufficient_responses(school:, academic_year:)
-    @student_survey_items_with_sufficient_responses ||=
+    @student_survey_items_with_sufficient_responses ||= SurveyItem.where(id: SurveyItem.joins("inner join survey_item_responses on survey_item_responses.survey_item_id = survey_items.id")
-      SurveyItem.where(id: SurveyItem.joins('inner join survey_item_responses on survey_item_responses.survey_item_id = survey_items.id')
                                       .student_survey_items
                                       .where("survey_item_responses.school": school,
                                              "survey_item_responses.academic_year": academic_year,
-                                             "survey_item_responses.survey_item_id": survey_items.student_survey_items)
+                                             "survey_item_responses.survey_item_id": survey_items.student_survey_items,
-                                      .group('survey_items.id')
+                                             "survey_item_responses.grade": school.grades(academic_year:))
-                                      .having('count(*) >= 10')
+                                      .group("survey_items.id")
+                                      .having("count(*) >= 10")
                                       .count.keys)
   end
 

app/models/school.rb

@@ -19,4 +19,8 @@ class School < ApplicationRecord
       .where(districts: { qualtrics_code: district_code })
       .find_by_qualtrics_code(school_code)
   end
+
+  def grades(academic_year:)
+    Respondent.find_by(school: self, academic_year:)&.counts_by_grade&.keys || (-1..12).to_a
+  end
 end

app/models/survey_item_response.rb

@@ -24,11 +24,11 @@ class SurveyItemResponse < ActiveRecord::Base
 
   scope :averages_for_gender, lambda { |survey_items, school, academic_year, gender|
     SurveyItemResponse.where(survey_item: survey_items, school:,
-                             academic_year:, gender:).group(:survey_item).average(:likert_score)
+                             academic_year:, gender:, grade: school.grades(academic_year:)).group(:survey_item).average(:likert_score)
   }
 
   scope :averages_for_income, lambda { |survey_items, school, academic_year, income|
     SurveyItemResponse.where(survey_item: survey_items, school:,
-                             academic_year:, income:).group(:survey_item).average(:likert_score)
+                             academic_year:, income:, grade: school.grades(academic_year:)).group(:survey_item).average(:likert_score)
   }
 end

app/services/race_score_loader.rb

@@ -61,7 +61,7 @@ class RaceScoreLoader
     @grouped_responses ||= Hash.new do |memo, (school, academic_year, survey_items, race)|
       memo[[school, academic_year, survey_items, race]] =
         SurveyItemResponse.joins("JOIN student_races on survey_item_responses.student_id = student_races.student_id JOIN students on students.id = student_races.student_id").where(
-          school:, academic_year:
+          school:, academic_year:, grade: school.grades(academic_year:)
         ).where("student_races.race_id": race.id).group(:survey_item_id).having("count(*) >= 10").average(:likert_score)
     end