Есть несколько, насчет которых не уверена.
1. Where was the game rugby invented?
2. How many acrobatic schools are there in Uzao?
3. When does the training start?
4. How will his skills help him?
5. How many school subjects are there in the schools?
6. What school subjects are there in school of Holden?
7. When do school lessons start in school in Nepal?
8. Why?
9. How much time do students spend in Japan to reach the school?
10. What is the average duration of the school day in Great Britain and USA? (не уверена)
11. What is the average duration of the school day for students of the secondary school? (не уверена)
12. What do students (pupils) of Korea and Greece visit after school?
13. When does Ji Kim return home?
14. What happens if he doesn't study hard?
15. In which college the rules are very severe? (не совсем уверена)
16. What form do the student wear?
17. What is Eaton? (Итон?)
18. What do student have to do before going home?
19. What can the students do in the school Summerhill?
20. How many children do not have school to study? (более правильное, только смысл "чтобы в них учиться") / How many children do not have school to go there?