Sorry, this is a user to user forum, not Adobe support
http://www.adobe.com/education/students/studentteacheredition/eligibil ity.html
Unless the process has changed, you will receive information with your order on how to submit your information and then be sent your activation number
How long that will take MAY depend on exactly how and where you ordered... I don't know if different vendors have different instructions
I bought CS5 MC before I retired from WA State University, and my activation numbers were sent to me inside 2 days