What am I suppose to do?!

Jo
So in my cooking class I am grouped with 5 students including 1 that is special Ed. He keeps following me around in class and touches me sometimes. Anywhere and it's very uncomfortable due to my sexual abuse in my life already. At first I could handle it but my body remembers what has happened and I start to freak out in class. I've told him several times not to touch me yet he does anyways. I try to be nice instead of slapping him in the face because he is special Ed. What am I suppose to do when he does it again? I don't want to make a scene. Or over exaggerate. Help please.