To base just 20 percent of a teacher's "effectiveness" rating on actual progress of students in the teacher's classroom as measured by state assessments, instead of as much as 50 percent suggested by a 2011 teacher tenure reform law. Also, to let school districts develop their own evaluation tools for other parts of the rating rather than ones prescribed by the state. A school would be prohibited from assigning students to a class in the same subject for two years in a row taught by a teacher rated “ineffective” in that subject, but new students could still be assigned to that teacher.