LANSING, Mich. (AP) — The Republican-led Michigan Legislature has narrowly approved a bill to evaluate public schools with letter grades.

The legislation cleared the Senate 21-17 Tuesday night, in the final days of a lame-duck session. The measure eked through the House last week and will go to Gov. Rick Snyder for his expected signature following a procedural step.

The state Department of Education would be tasked with giving each public school an A, B, C, D or F in five categories by September 2019 and each year after. Schools would not be given a cumulative letter grade.