Related Clues:

• "1-2-3, 1-2-3," e.g.
• Worked on in the lab
• Evaluation method
• Midterm, maybe
• Eye __
• Bit of lab work
• Mental workout
• It may include an essay
• Factor in a class grade
• Focus of a class action?
• Student's stressor
• Word with "acid" or "field"
• It's needed to make the grade
• Something to study for
• Pushed to the limit