Fun fact: default.ide is a plain-text version of default.idb (editing it will have no effect though, the default.idb is the file that's used)
If you are a model of a ped that has a unique model status of 1 then that ped won't spawn anymore since you are that ped and the game won't allow anymore to spawn.
Yup, that's how I thought to look to change the gender at all, since it was listed there.
Also, it's kind of funny seeing the girl suddenly spawn and start throwing eggs at people. I also think she spawned in the boys dorm at one point.
Only real glitch is that the model gets messed up when the game automatically switches you to a new outfit. Pressing the button to change the model won't work, in that state, and then the game won't progress to another chapter. Oh well -___-