It really depends on the teacher and how strict they are. I never brought in my 'folder', (which didn't exist after about a month into school, mind you) except occasionally for Chemistry, since our teacher was known for doing folder checks to see that we were keeping it up to date. But most other teachers just told us to keep it at home as a sort record of all the things we had studied, rather than a bring it into school everyday; since it's old material that we wouldn't particularly need.