How to lock a bike on a bike rack at school.?

What is the best way to lock a bike, without removing it's tires, on metal bike racks at school. The big n looking kind where you stick the front tire between the n.

If you have an expensive bike, you best quick-release the wheels and use a thick cable lock to lock up all the parts. Otherwise a thief might swipe unlocked parts like your seatpost or the wheels.

If you got a piece-of-garbage $100 Walmart bike, just lock it up with a U-lock.. Thieves usually don't bother hitting cheap bikes.

I never ride my thousand-dollar bike to school. I use the piece-of-crap $100 Walmart NEXT bike for that instead. :-)

Try and use a chain with a half decent lock and alos get as many parts of the bike wound in the chain that could be stolen, like the front wheels and the frame are the main ones, I sometimes see some people go as far as to take the seat with them, probobly a decent idea if it's quick release.

Also might be worth swopping quick release bolt/screws for traditional bolts to limit the likleyhood of someone trying to pinch your bike!

U-lock and cable combo
For an example:
http://www.nashbar.com/profile.cfm?categ...

get a long lock that can go through the front and back wheels aswell as the frame, these are the most likely parts to be stolen