I am a teacher. My pupils are between the ages of eleven and twelve. I teach math and I really enjoy it. My students took their exams recently and nine of them didn't pass. They are good boys and girls and they usually study, but some of them didn't. I admonish them but the problem rests with their parents who don't care if their children learn or not. They only want their children to pass their exams. This is one of the reasons why Spain is one of the worst countries in Europe to teach in.

Teaching in Spain

I am a teacher. My pupils are between eleven and twelve years old. I teach Maths and I like teaching a lot.
Nowadays  Recently, my students have taken took some exams and nine of them don't didn't pass it. They are good boys and girls and they usually study. However, some of them don't.  it. I get on with them about it. But generally, the problem is their parents. they don't  It doesn't matter to them that their children learn, they only want their children to pass their exams. This is one of the reasons why teaching in Spain is one the worst. in Europe.

What you wrote is good. I corrected your piece on the more colloquial side.