Use public score_for_measure method instead of private 'for_measure' scope

app/models/survey_item_response.rb

@@ -6,8 +6,6 @@ class SurveyItemResponse < ActiveRecord::Base
   belongs_to :school
   belongs_to :survey_item
 
-  scope :for_measure, ->(measure) { joins(:survey_item).where('survey_items.measure_id': measure.id) }
-
   def self.score_for_subcategory(subcategory:, school:, academic_year:)
     measures = subcategory.measures.select { |measure| sufficient_data?(measure: measure, school: school, academic_year: academic_year) }
 
@@ -26,6 +24,7 @@ class SurveyItemResponse < ActiveRecord::Base
 
   private
 
+  scope :for_measure, ->(measure) { joins(:survey_item).where('survey_items.measure_id': measure.id) }
   scope :for_measures, ->(measures) { joins(:survey_item).where('survey_items.measure_id': measures.map(&:id)) }
   scope :teacher_responses_for_measure, ->(measure) { for_measure(measure).where("survey_items.survey_item_id LIKE 't-%'") }
   scope :student_responses_for_measure, ->(measure) { for_measure(measure).where("survey_items.survey_item_id LIKE 's-%'") }

app/presenters/measure_presenter.rb

@@ -14,10 +14,7 @@ class MeasurePresenter
   end
 
   def gauge_presenter
-    average_score = SurveyItemResponse.for_measure(@measure)
-      .where(academic_year: @academic_year, school: @school)
-      .average(:likert_score)
-
+    average_score = SurveyItemResponse.score_for_measure(measure: @measure, academic_year: @academic_year, school: @school)
     GaugePresenter.new(scale: scale, score: average_score)
   end