For a while now i have been noticing that our school computers have been running a little slow, i have investigated the problem and found out that School anti virus programs have been taking up way to much memory in the system networks. They make the computers slower and sometimes will mess up the connection between computers and the server.
Since only the computer network administrator in your building can permanently delete the program you should talk to the network keepers on fixing this problem. Tell them to install a low costing anti virus program called avg;Avg is free for singular unit and low costing for a whole business, it has a 50 % discount for schools as well, it will protect your computer and deleting the anti virus program in the computers that take up the most memory will make them run faster.
The rtvscan that is in all 2000 and below windows computers will take up 50 % of the computer hard frame, in result it will run much slower. Even somtimes it can spike up to 100% witch will interupt connection and may make the computer freeze for a few seconds... this can be a real hastle for anyone trying to run diffrent programs or files.