Six Years!

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Across
  1. 3. Subject for which B became an expert for third-grade science project
  2. 6. Permanent part of the school thanks to B's lobbying
  3. 8. Inspirational author who deserves to be thanked for her service
  4. 10. Company name of profitable business dissolved in late 2021
  5. 12. Delicious, chewy sustenance for a year's worth of online classes
  6. 13. First two letters of three first names in the Starbucks crew
  7. 15. First seat on first day of kindergarten
  8. 19. Abbreviated title of movie starring two sunglasses-clad federal agents
  9. 20. Talent of cutest kid by far in first-grade talent show
  10. 21. Country located on the planet of Shushoee, directly at the edge of the universe
  11. 23. Dress-code requirement for much of fifth grade
  12. 26. Teacher known as a knowledge expander/guy in a dander/goose to the gander/etc
  13. 28. Winner, within Big Yellow's walls
  14. 29. Yak Death!
  15. 31. Living, breathing prize won on the last day of third grade
  16. 32. Flat Stanley's companion, Flat _____
  17. 33. Memorable Rasmussen prop from career day
  18. 34. Primary activity from 1 p.m. to 2 p.m. during kindergarten year (and a challenge for small hands)
  19. 36. Gray on the walls
  20. 38. Last name of first friend
Down
  1. 1. Major foe of the fifth-grade school year
  2. 2. TGOS director
  3. 4. Major foe of the fourth-grade school year
  4. 5. Teacher known mostly in only two dimensions
  5. 7. Subject for which B became an expert for second-grade science project
  6. 9. Obsession during online school, strictly prohibited at in-person school
  7. 11. Ballet most memorable for its Little Fairies
  8. 14. Unimpressed phrase overused during fourth grade
  9. 16. 50-lb. gift from Khorrams, March 2020
  10. 17. Google ___, online technology that B used to build Ms. Miller's COVID Class curriculum
  11. 18. First name of American hero born in Tuskegee in 1913
  12. 19. Kindergarten reading craze, Rainbow ____
  13. 22. Dad's favorite teacher
  14. 23. Goal of first-graders, frontward and backward and two at a time and so on
  15. 24. Eclectic morning soundtrack from March 2020 through March 2021
  16. 25. Tech company none of us had heard of in February 2020
  17. 27. What we've just now come to
  18. 30. Title, with "Miss," won by Persioominstoff Trechermoile
  19. 33. Bad guy holding the princess (not so tough with fireballs, though)
  20. 35. Pop song on repeat circa 2021--Just take your time, the clock is ticking
  21. 37. Teacher who definitely doesn't want you to ftba
  22. 39. Homer's cry