BOISE, Idaho -

A Boise Democrat's plan to get accurate information about how many students are in Idaho classrooms is headed to the House floor.

Sen. Janie Ward-Engelking told the House Education committee Friday that student-teacher ratios are often incorrect.

Schools determine those ratios by dividing the number of students by the number of certified staff.

That can include counselors, speech pathologists and vice principals  -- people who work with students, but don't necessarily head up a classroom.

Ward-Engelking said teachers get frustrated when they have a dozen more kids in their classroom than the ratio suggests.

The lawmaker wants the State Department of Education to compile a count at every Idaho school -- a task she says won't cost the state a dime.

The bill passed the Senate unanimously last month.