Help me! When I am at school in my class I feel I can't read in front of them when my teacher ask me read my heart beat too fast and scared?

Stage fright. That is a common problem - it's stage fright. Just pretend you're only talking with the teacher, be confident, & don't worry if you get the answer wrong - that's why you're in school: to learn. It's hard - i know - but u have to have confidence in yourself & don't care what the others may say/think. U may be right more often than not & then a) you'll be more confident & b) others will come to u.