Your post caught my attention for a couple of reasons.
You very well may have the latest build, but I strongly suggest that you don't assume anything. Check. Are you aware what your build number is called? You need to provide accurate, verified info to get relevant help.
Secondly, are you posting a WEP encryption key for your school?
They have it hidden for a good reason, I am sure. Do you have permission to post it to the Internet? The google robot will soon find your post to this forum and it will be on the internet.
Sure, some other guy who doesn't care about your school's security has posted it on the internet already, but your post will appear also.
As for the specifics of your problem, I will let someone else speak to that since I use WPA encryption and I use Neighborhood to connect to it.
If I give advice it is usually because I did it / tested it successfully on my XO. I will warn you otherwise.