Some tip's to do it yourself =p
- a white brick wall ~ Im sure you can use a segment already made, and throw it in to photoshop to change it white.
- a white brick wall with light blue lockers on the wall. ~ Of the top of my head you could do the same as above here or try and copy the texture of a locker and 'paste' it on to a segment. Again in a Photo Editing suite, like Photoshop or Paint Shop Pro.
-A yellow-brick wall ~ ame as the first one.
- a plain wooden floor (not like the chateau study) ~ Shadow's got a great wooden floor texture
Go get it =p
-desks ~ Are we talking typical american school desk's or acual desk's?
-regular desktop computers ~ There is a LC Monitor and keyboard in game. Im sure yourself or someone can make a tower/desktop. (I might, since I need one myself.)
-blue doors (that are used) ~ Again look at the door's in FPSC and see if you can change one for your needs.
-wooden doors with small windows ~ Im guessing you mean school class room doors? The solid wooden ones with a square window just above half way up? Im not sure who to add a 'window' in to a door as of yet. Best ask around.
-a basketball hoop ~ Is this on a backboard for a wall or attacked to a stand for general use out in the open?
- a static school bus ~ What size and how detailed? I reckon this might be the hardest one to do.
- and a white marker board with anything written on it ~ Use The Sign Maker program seem's like it does a good job and might work for this one. Simply make an image of the board with text on it and create.
Most of the thing's you requested can be done with the Segment Editor with a few photo editing software or some 3rd party stuff from the guy/gals around here
Good luck
Tal