how to change the order of the group_method parameter in the grouped_collection_select method?

Anyone know how to order the group_method parameter in the
grouped_collection_select method? I get a nice list of subjects in my
drop down BUT they are not in order (alpha...)

My code is below (:subjects is my group_method parameter).

    <%= grouped_collection_select(:course, :subject_id,
State.where("id = ? OR state_abbr = ?", current_teacher.state_id,
'CC'), :subjects, :name, :id, :name, {:prompt => true} )%>

I've tried something like this: Subject.order('name')... but get the
following error:

  (eval):1: syntax error, unexpected $end
  group.#<ActiveRecord::Relation:0x00000102cb71d8>

Or, :subject.order('name').. but get this error:

  undefined method `order' for :Subject:Symbol

Oops, rere are the associations:

State
  has_many :subjects

Subject
  belongs_to :state
  has_many :courses

Course
  belongs_to :subject