Dropbox only 2GB free
A few things possible
First, his campus probably does not block "torrents" but blocks the port commonly used for torrents. Use another port
If speed is not important, you can setup an FTPD on your house machine and he can login and download. FTP is very fast, but will be limited by your home internet connection's upload speed. If you have or know of a machine with a fast internet connection(work/school?) setting up the FTPD there would be better
Sites like this are another option
https://www.transferbigfiles.com/They have a 10gb account for $5/month, with a 14-day money-back guarantee. Which to me says you could open account, transfer your 4 or 5 gb, then cancel account and pay nothing. Not sure if that is true, so
be prepared to pay $5 if you go that route