I recently downloaded SPSS statistics and decided to do the free trial due to time concerns. However, a couple of days ago I purchased the IBM SPSS software through my school and received a license number. How can I link that license number to the account I had used for my free trial? The only thing that shows up for me is to purchase the software, but I already through my school.

The Trial is based on our Subscription model which is a different edition then the standard Statistics edition, which still uses license keys. If you received an authorization code (20 digit) from the university you will also need to request the download copy from them and then follow the steps in this article to license the install:

https://www.ibm.com/support/pages/how-add-authorization-code-ibm-spss-statistics-through-license-authorization-wizard