Перевод на английский! Пожалуйста! "Я уверен, школа должна быть обязательной." И можно без переводчиков, а сами. Заранее

1. I am sure that school should be obligatory. 2. I\'m confident that the school - needed.3. I am sure that the school is required.4. I believe the school is needed.5. I am sure that school is necessary.6. School is necessity I think.7. Studying at school is necessity.