I believe that the educational version is identical to the full version.
I tried my serial number and it says it is invalid.
Did you not purchase the program on disc?
If not, what site did you download it from?
If you downloaded it from Amazon, you can re-download it by following the Your Software Library link on this page.
Did you download it from the same site you purchased it from?
Did you qualify for the educational version by providing proof of eligibility?