School and personalities

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Across
  1. 1. A formal event at the end of high school
  2. 2. A personality trait describing someone who doesn’t talk much
  3. 5. A subject where you learn about atoms and reactions
  4. 9. A person who is kind and sociable
  5. 10. A personality trait opposite of outgoing
  6. 12. To permanently remove a student from school
  7. 15. A person who leads cheers at sports events
  8. 16. A punishment where students stay after school
  9. 17. A school where students live and study
  10. 18. A formal test of knowledge
Down
  1. 1. The head of a school in American English
  2. 3. A place to borrow books in school
  3. 4. A place where students eat lunch at school
  4. 6. A subject where you study numbers and equations
  5. 7. An emotion felt when something upsetting happens
  6. 8. A person who attends school
  7. 11. The final year student in American high school
  8. 13. A place where students change clothes for sports
  9. 14. A tool used to mark important text
  10. 16. What you receive when you graduate