A Conspiracy against Excellence

Teacher union salary schedules reward the mediocre, penalize the talented

By Steven Miller

Recent research has shown that teachers are by far the most important factor in student achievement—some 20 times as important as other factors, like class size or socioeconomic status.

Varying significantly in their capacity to teach, some teachers consistently produce large gains in student achievement, regardless of the kinds of students assigned to them, while other teachers do not. Link to rest here