The Satellite Crossword: Spring Issue 2020

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Across
  1. 1. IB Subject everyone knows is the hardest but won't admit
  2. 3. Every teacher's obsession
  3. 6. "The IB is a ___, not a sprint" (a teacher's favourite)
  4. 8. Day everyone wants to be in the cafeteria
  5. 9. House that won TBS' inaugural sports day
  6. 14. Number of nationalities in TBS
  7. 15. Most time-consuming IGCSE subject
  8. 16. TBS Principal before Mr. Mark Taitt
  9. 18. Busiest time of the year
  10. 20. Room protected by two heavy doors
Down
  1. 2. Your ticket in
  2. 4. Residence of the EE boss
  3. 5. Number of years TBS has operated for
  4. 7. Sports Day venue
  5. 10. School's forgotten mascot
  6. 11. Place where (IB) students are free to go, but never to stay?
  7. 12. Lost something?
  8. 13. Colony in which the first TBS building was founded
  9. 17. Level of the director's office
  10. 19. House (room?) of horrors, say?