Chai Chee Sec: The air is my student

Finally, I've settled all the markings of the 4NA prelim paper and common test papers for 2N2 and 3NA. It's tiring to do markings, especially when you have to measure the constructions.

Today I had 2 classes, 3NA and 2N2.
For both classes, I returned the common test papers to them to check through and went through the answers with them.

The boys in 3NA had no attention span at all. Once they come into class, they started talking to their friends and do their own things. The teacher does not exsist in the classroom at all. All the time, they are causing distrubances to the other classmates.
When will they ever learnt to keep quiet?
When will they ever learnt to keep quiet?

I gave out the common test papers back to them and they didn't even seem to be worried that they have done so badly for the test. Instead of thinking of how to do better for the final year exam, the boys were laughing at the marks of each other's paper.
What does test paper mean to them?
What does test paper mean to them?

2N2 had a split maths class today for 2 hours. The students noticed that I have brought down their common test papers and they were so eager to see their results. Though it's a 2 hours lesson, I've planned for the first hour to be used to continue with lesson and the next hour to give out the test papers and go through the solutions. Obviously, the class were more excited to know the marks than to listen to the teaching. Finally I gave the papers out to the class.

The boys in 2N2 can never sit still for that mere split second. They are always running around, causing trouble around in class, disturbing those who want to listen and interrupting my lessons.
They fight, argue, shout, bang tables and chairs. They walk around in class like nobody's bussiness and they are rude towards teachers.
Where does the teacher stand in their respect?
Where does the teacher stand in their respect?

Everytime I teach, I feel like I'm talking to the air and only a few students who are really keen in learning and improving their grades. The tables, chairs, lights, fans and books are all my students. They will be still all the time listening to me teach. They will not walk around and distrub the class and neither will they make any noise. Many times in class, I stopped and felt very miserable and sad. Why is it that none or only a few students care to know what I am teaching in class?

This isn't fair to me.
Why do I have to spent so effort explaining math concepts and solutions when no one is listening.
Why do students still bring bag to school when inside the bag there's literally nothing at all except for a pencil case and a reading material?
Why?
Why?
Why?

Teaching to the air,
Peiyan