i am no expert, but this might help some people (who are looking to have teachers see only the classes that they teach on their homepage).
i have manager power. after about 40 minutes of playing around, i came up with this:
when a new teacher created a course, i had to take away her teacher roll, and then had her enroll as just a student.
then i went back and reassigned her as a teacher roll for that course and she now only sees her own courses.
this might not address everyone's issue on this topic, but i hope it helps someone. i was excited i figured it out so i signed up and made my first post! woot!