In high school, will we go over material as a refresher in math?

-My math teacher in 8th grade (last year) told everyone in my class that the material we were learning to prepare us for 9th grade was the only time we'll ever go over the material, that we wouldn't be able to go over the material as a refresher in 9th grade. Is this true?Yes. The whole first half the year is just going over stuff you already knew... then again I took algebra twice.



The first semester is really easy though