There will not be a problem if you register 3 courses, and state as part-time student. However, if you only have 2 courses or less, you will face a problem regarding your visa extension.
thanx...but it's kinda emergency,cuz i need get back to china for summer &there isnt much time left to take 2 terms as a full-time student...so...im just wondering if i can get my re-entry visa done by hiring a lawyer or something?thanks