Across
- 2. grade
- 4. history
- 7. middle school
- 10. elementary school
- 12. literature
- 14. geography
- 15. high school
- 18. algebra
- 19. chemistry
- 20. sociology
Down
- 1. university
- 3. math
- 5. psycology
- 6. class
- 8. biology
- 9. science
- 11. calculus
- 13. physics
- 16. geometry
- 17. required