modify

app/controllers/ecs/evaluations_controller.rb

@@ -7,7 +7,7 @@ class Ecs::EvaluationsController < Ecs::CourseBaseController
       course_achievement: service.course_achievement,
       course_rate: service.course_rate,
       graduation_subitem_evaluations: service.graduation_subitem_evaluations,
-      score_levels_map: service.score_levels_map
+      score_levels: service.score_levels
     )
   end
 

app/services/ecs/query_course_evaluation_service.rb

@@ -65,10 +65,10 @@ class Ecs::QueryCourseEvaluationService < ApplicationService
     end
   end
 
-  def score_levels_map
+  def score_levels
-    @_score_levels_map ||= begin
+    @_score_levels ||= begin
       index = 0
-      ec_course.ec_score_levels.each_with_object({}) do |level, obj|
+      ec_course.ec_score_levels.map do |level|
         hash = level.as_json(only: %i[id position score level])
 
         hash[:description] =
@@ -79,7 +79,7 @@ class Ecs::QueryCourseEvaluationService < ApplicationService
           end
 
         index += 1
-        obj[level.id.to_s] = hash
+        hash
       end
     end
   end