Solution: re-connect to the MMU-Private2 network (the password is saved on school computers)
ALSO: once your computer has connected to MMU-guest, it will join that network before joining Private2. This is because Windows tries to join it's most recent networks in order.
- Right-click on the wireless icon and choose "Open Network and Sharing Center"
- Click on "manage wireless networks (upper left)
- Right-click on MMU-guest and "Remove Network"