I operate my classroom grades as follows:
- HW counts 20%
- Quizzes count 30%
- Tests count 50%
All quizzes and tests are announced at least 1-2 days in advance and usually do not allow for re-takes. All HW's that are checked receive equal weight, while quizzes are naturally weighted according to point totals. Unit tests cover all material from the unit's quizzes and HW's.
Extra credit is always available for participation in Math League, and sometimes from special assignments upon request.