Which teacher?

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Across
  1. 4. Large sums expert
  2. 6. One correcting writing ripped T rearranged
  3. 8. Sports Coach: she spent exercising
  4. 11. Deals in matters of belief — Roman rearranged
  5. 12. Textiles expert from the Black Country sounds blissful
Down
  1. 1. School leader found in a mixed tram
  2. 2. Scientist who might also make bread
  3. 3. You'll find her in the garden
  4. 5. Maths teacher ignites bright ideas
  5. 7. Safe guarder — trick a P rearranged
  6. 9. Space for Physics experiments — or a big room
  7. 10. French speaker has matt rearranged