How fast can you solve it

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Across
  1. 3. process of gaining knowledge
  2. 5. place where young children start their education
  3. 6. person who imparts knowledge to students
  4. 7. room filled with tables and chairs and
  5. 8. person in charge of a school
  6. 10. where you go after you finish high school
  7. 11. school subject where you learn about the past -
Down
  1. 1. place where you can find lots of books
  2. 2. school subject where you solve equations
  3. 4. where scientific experiments happen
  4. 9. foreign language you learn in high school
  5. 11. school school where you study when you're not a child anymore
  6. 12. where you learn new things