Every year, at the beginning of the semester/year, a standardized test will be taken. The test we cover material from the previous year's class in the new class' subject. The teachers will then be evaluated on their ability to "advance knowledge." This advancement will be measured at the end of every year by another exam.
Example:
Student's classroom average of the initial knowledge exam (8th grade math):
550 (This score, again, is based on the student's ability to answer questions on 7th grade math.)
Student's classroom average of the final knowledge exam (8th grade math):
660.
In another class, where students are being taught the same subject, the scores went: 830, and 940.
So, 660/550 = 1.2. 940/830 = 1.1. Based on this, if the math department were to get rid of a teacher, they should more readily let go the lower-ratio teacher, even though that teacher had better performing students.
That's the purpose of education, correct? We're supposed to advance knowledge.
Sure, you'll have teachers that have to "teach to the test." But, remember, even universities have to "teach to the test," at least somewhat - when I was in college, the biology curriculum was directed toward MCAT material. . . this was very obvious.