Public school advocates are making a push for the state Senate to take up a bill that would ease an originally unintended burden on elementary schools across the state. Lawmakers passed new, smaller class size rules last year, but those will reportedly cost school districts millions of dollars, forcing the hiring of more teachers and building expansions for the new classrooms. House Bill 13 would give schools more flexibility. It passed the House unanimously, but the Senate has not taken up the bill.