Words Easily Confused

1234567
Across
  1. 3. : a person who gives lessons at school
  2. 4. : afield of study that students are taught at school
  3. 6. : a person who gives lectures at university
  4. 7. : the qualification you earn when you graduated from university
Down
  1. 1. : a person who teaches a sport or a particular skill
  2. 2. : the prize that the winner of competition receives
  3. 5. : anumber of lessons taught on a specific subject