Chai Chee Sec: Exhaustion

I'm tired.
I'm emotionally and mentally tired.
I'm very tired of stepping into 2N2 to yet again finding the boys not interested in attending the class.
The boys are in a gang of their own creating a lot of noise in class, the foreign students are in their small group discussing amongst themselves, the malay girls are seated together chit chatting away. The only students who are listening are those who really want to learn.
Seriously speaking, I can't handle the boys' situation in 2N2.
How can I stop them from playing in class?
How can I get them to listen to my class?
When will they grow up and be a responsible student?

I asked the students of 3NA to do a reflection about the maths class they have gone thru since the beginning of the year. In the end, only 6 students out of the 15 who were present did it. One student wrote out her feelings. She wrote that initially, she liked math but due to the constant changing of teachers in that math class. Also, the noisy boys who keep disturbing the other students from concentrating in class made her difficult to continue her interest in maths and eventually, she lost interest in the subject.

I understand her feelings.
Who doesn't want to have a good conducive class to study in?

Can someone get me the martian zapper so that I can zap the not interested students and sent them to another dimension at the start of the class and zap them back when the class ends?

Peiyan