SPELLING

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Across
  1. 4. a person who derives advantage from something
  2. 7. a dividing line
  3. 10. concerning or enforcing discipline
  4. 12. a person who acts as a link between people
  5. 13. any animal resulting from the crossing of different breeds or types
  6. 14. needed
  7. 15. intermediate band
Down
  1. 1. the board in the classroom
  2. 2. a gem
  3. 3. words that someone knows
  4. 5. alone
  5. 6. one's opponent in a contest, conflict, or dispute
  6. 8. normal
  7. 9. usual
  8. 11. showing a disinclination for physical effort