Do you know CSY?

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Across
  1. 5. what does Mr. deSalis teach?
  2. 7. teacher who used to be a choir teacher
  3. 8. teacher who knows the most about WW2
  4. 9. goofiest middle-school teacher
  5. 11. teacher who published a book
  6. 12. which middle-school teacher is secretly a pirate
  7. 14. absolutely loves lemons
  8. 15. something special upper-school does every year
  9. 17. the music teacher
  10. 18. used to teach in the Philippines
Down
  1. 1. the school mascot
  2. 2. the most creative teacher
  3. 3. knows the most about fish
  4. 4. middle-school teacher who used to be a volleyball coach
  5. 6. the middle-school principal
  6. 9. went to school for engineering
  7. 10. teacher with the most unique style
  8. 11. the upper-school principal
  9. 13. the first person you see in the office everyday
  10. 16. which teacher loves the capitals?