mkm school puzzle

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Across
  1. 3. a writing tool with ink
  2. 4. student refresher (2 words)
  3. 6. where the boss of the school is
  4. 12. students learn from them
  5. 13. temporary desk
  6. 14. an item you sit on
  7. 15. a large room classes play games in
Down
  1. 1. you write on this
  2. 2. this is what makes the school full
  3. 5. people have these on their back
  4. 7. a person that cleans the building
  5. 8. you use this to find new words
  6. 9. a place with instruments (2 words)
  7. 10. a writing tool with graphite
  8. 11. a place with many books