Complex sentence: Students can also choose a different set of up to 4 classes which they will attend Tuesdays and Thursdays, so all together one student can take anywhere from 1 to 8 courses.
Split into simpler sentences: Students can also choose a different set of up to 4 classes which they will attend Tuesdays and Thursdays. So all together one student can take anywhere from 1 to 8 courses.