English writing

I am not a native English speaker but I am always trying to do my best. can you please say me if I have done something wrong. like grammar or the spelling. What would you do better?

thank you

My name is Katharina Ehmann. I am in high school or how we in Austria say in „Hauptschule“.I am a responsible and hard working student. I enjoy my time at school. I like to receive and deal with challenging tasks. My teachers always are saying that I have a logical thinking what will help me in my future. The biggest difference between me and my classmates is that I want to learn and that I like it. Yes, I am also saying that to learn is a hobby of me. I haven´t favorite subjects or subjects I don´t like. For me is every subject unique and fascinating. I like maths because there are only two ways how it could be. Correct or wrong there s nothing in between. In German, English and Spanish there I can make conversations and write stories or essays. And in biology, chemistry, physic and history we can learn something about our human being. My hobby is reading interesting and knowledgeable books in my free time. It is the good source of enjoyment and knowledge. It makes me disciplined and most importantly a successful person in my life. My other hobbies are playing golf and tennis. I play tennis mostly every day after school. Both sports are like meditation to me. Almost all customers of my father are diplomates or their profession has something to do with business and politics. So I have been growing up in a social circle of politicians. Since I know what about these job is I am very interested in it. I don´t know now what I am going to be when I am growing up but I know that it definitely it is something about politics.