It maybe because parents are too ambitious. Some parents put so much pressure on young children so that they can live their dream through their children. 

Anyways the school system is also to be blamed.. They bite off more than they can chew. The syllabus is so vast that the children don't get their foundation strong. 

It is psychological and physical pressure adding up on children that is leading to all the suicides and unacceptable behavior in schools. 

The system of Tuition after school hours is the outcome of many different things 

1, Nuclear families where students cannot ask the help of an educated elderly relative

1, Working parents who are unable to devote enough time to their school going children

2, Unlimited number of students in a class, sometimes as many as 70 students in a class which the teacher cannot handle.

3, Total commercialisation of the education system 

No doubt it is bad and is not at all healthy but who will bring in the reforms?

Commercialization of education is the main cause for the sorry state of affairs in the sphere of education. In addition to this there are parents who think sending their wards for tuition in extra hours is an essential status symbol.

Schools and parents force students to give 100 %, but not all the students can give hundred percent. For this parents are advised to send their kids to tuition after school hours. In this situation kids have no time to play or do other things.

Also some schools do their business. Teachers ask students to go for tuition for better results. Teacher get salary from schools and make good money by providing tuition. 

It is also due to the high population of students and the corresponding very low availability of seats in higher education institutions. This creates a tremendous pressure of competition for the limited no. of seats. Parents therefore start preparing children right from their infancy. Also quality of education has gone down and good teachers are also less in number. Commercialisation has set in due to which children many a times are taught after school hours by same teachers who hardly teach during school hours bur at extra cost. Parents have no choice.

I have seen the family in my opposite flat that they send their  children for classes. After reaching home they are so tired they without eating fall asleep.

I would say  teach what is needed.. My son who is in the 9th std does what my other son does in final year Med school. What is the need? The kid doesn't understand nor does he need it right now. Get the foundation right!

The text book is full of mistakes both grammar and conceptual. What is the need to put such crap together? 

The Govt. schools do not teach because of lack of infrastructure. This aspect is well utilized by the Private schools to their advantage.

Till the late sixties the govt. schools used to impart good education with similar or less infrastructure. 

But the situation is different now. I know greats like Dr. Sarvepalli Radhakrian was educated in an ordinary Govt  school.