BOSTON (CBS) – Student performance is often judged by MCAS scores, and soon, teachers might be judged that way as well.

Education commissioner Mitchell Chester wants to revamp the teacher evaluation system in public schools.

The proposal would reward teachers and administrators when students show year-to-year improvement on their MCAS scores.

Mandatory correction plans would be put in place for teachers whose students under-perform.

Teachers could be terminated if their students don’t show progress.

In the past, the Mass. Teachers Association has supported using MCAS scores as part of the evaluation process.