You have (maybe) heard of the nexuiz ninjaz community, over there we have a "Nexuiz School" project. We want to teach how to play nexuiz, not only to the beginners, but also to the intermediate ones.
I've made a mod to make the teacher's work easier. Here are the features:
Teacher status, password-protected.
Cheat whitelist, Impulse whitelist.
Pupil grouping (warping all the pupils on a specific position of the map)
Weapon control on pupils.
More to come, I hope...
It's not a big mod, but I think it can be useful...
Download link
PK3 containing the 2.4.2 compatible version, readme with some info, a compiled progs.dat and a patchfile to the 2.4.2 gamecode