The bell ring

intiqam88What is the opposite of "break time bell" ?

A bell does not have an opposite.

The opposite of hot is cold.
The opposite of light is dark.
The opposite of thin is fat.

intiqam88"The bell rang for the class to begin."

That is OK.

In many schools around the world, the bell is rung to signify the beginning and the end of a period ( a class). In normal circumstances, everyone in the schcool should know what the bell means when it is rung. If period 1 ( starting at 8 am) is English, at the sound of the bell, students should be already in the class, and the door of the classroom will be closed by the teacher. The next tim

The bell rang for the class to begin.
The bell rang for the class to end.
The bell rang for lunch time.
The bell rang for the end of lunch time.
The bell rang for recess.
The bell rang for the end of the school day.