I somehow mis-read your post as a school project instead of an actual school network.
vLANs are primarily used to break up broadcast domains and also implement ACLs on routing among the vLANs to help with security.
You may want to break up the subnets for your computers based on the logical layout of the computers relative to the building and network choke points.
Your computer labs have a 255.255.255.0 subnet mask.
This would let you use 192.168.0.1 - 192.168.0.254 for East Wing
and 192.168.1.1 - 192.168.1.254 for West Wing.
All the computers in each corresponding wing would be in their own vLAN.
Probably want your servers in their own vLAN. Setup routing between all the vLANs/subnets.
If your network backbone is gigabit, I bet you could leave all the computers in one vLAN since broadcasts shouldn't be that bad, but it's not ideal.