Ensure the correct rate (80%)

Dear parents:

Please read the school rules for your children.

In class, students must listen carefully. They can't drink or eat. They can't speak loudly They must raise their hands to answer the teacher's questions.

After class, they must finish their homework and do exercises. They can't watch TV or play computer for long. They must read some books.

They can't run and play in the library. They must keep quiet.