Do I Tell ?

I read Do I Tell ?, a level 4 book in FOUNDATIONS READING LIBRARY.
This book is easy to read. Main characters are three boys. Two boys did  do wrong things.
For example, they write on the back of the seat with a black pen and throw them bottle and it breaks. A boy was thinking they were not good, but he couldn't advice them. He was scared of them.
As a result of this he was took to the police station with two boys.
Telling what we couldn't tell easily is difficult, but it is very important thing.