Portal::School uses polymorphic grade_levels
Portal::School uses polymorphic grade_levels

  has_many :grade_levels, :as => :has_grade_levels
  has_many :grades, :through => :grade_levels

In addition there is a start of the work necessary to make
a Portal::School object work as an accordion container.
concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse