Hi,
We have created an ER diagram for the below mentioned scenario. This is the first time we're doing this, some comments would be useful

Problem statement: A website which allows students to sign-in and register for different courses. Students can then create question sets for registered courses. Each question set will have several multiple choice questions, with one correct answer. Other students can login and select any question set and answer it. The performance of any student can be analysed later.