Affiliate Marketing Secrets

I am 16 years old, and I passed Class 10 in 2012.
I want to study basic Class 9-10 Physics, Chemistry and Maths properly and a little of the Japanese language in the next 5-6 months, so I want to start Class 11 in an English-medium school in 2013 instead of studying Class 11 books in such a short time.
I have already taken admission in a state board(Council of Higher Secondary Education, Odisha)-affiliated junior college, but the classes just started recently and I don’t think I can study class 11 Physics and Chemistry in more detail without having proper knowledge of class 8/9/10 Physics and Chemistry. Also, the teachers aren’t very proficient in English, and they teach much of the course in Oriya, a language I am the least proficient in. My school removed class 8 books from class 8 and we were taught class 9 books instead. Class 8 books had the basic concepts which were to be taught in class 10, and I didn’t fully comprehend those concepts.
Moreover, I aspire to be a physicist, so I ‘need’ to have proper knowledge of Physics, Chemistry and Maths.
My mom says that it would have drastic consequences if I don’t study class 11 this year, that I won’t get admission in any school in 2013 and that there’s an age-limit for getting admission in a class in a school, going to college/university and getting a job. I secured 66% in Class 10.