答案：

1. D) providing good education for baby boomers.

2. D) Students’ performance declined.

3. D) They are mostly small in size.

4. D) Some large schools have split up into smaller ones.

5. C) their college-level test participation.

6. B) Their school performance was getting worse.

7. A) maintain closer relationships with their teachers.

8. Simplicity

9. different measures

10. tough subjects