Related Clues:
- Bit of lab work
- Mental workout
- Major portion of ones grade, often
- Term paper alternative
- Bar, in 13-Down
- It may include an essay
- Final, for instance
- Factor in a class grade
- Focus of a class action?
- Student's stressor
- 8-Across, e.g.
- Word with "acid" or "field"
- LSAT, for one
- It's needed to make the grade
- Huge test