443, TLS/SSL... your connection don't show but as soon as you redirect off there will be an entry in the FW logfile. If your schools admin(s) are any competent, your transaction will show up as connecting to a computer in a dynamic IP range, and a flag will go up. See the quote from GRC.com on "
the identity of the remotely connected server can be verified with significant confidence."
QUOTE
This port is used for secure web browser communication. Data transferred across such connections are highly resistant to eavesdropping and interception. Moreover, the identity of the remotely connected server can be verified with significant confidence. Web servers offering to accept and establish secure connections listen on this port for connections from web browsers desiring strong communication security.
Once established, web browsers inform their users of these secured connections by displaying an icon — a padlock, an unbroken key, etc. — in the status region of their window.
http://grc.com/port_443.htmIf your school (like a lot of schools and institutions do) use a "Carnivor" like appliance you can be sure they follow you to every site you go to. It's only the "https" sites that dont show up and on pages with insecure and secure content. The insecure content show.

Nils
[Added] And since you are such a computer savy person, how come you don't realize the image you are linking to in your signature don't show up because of hotlink protection?
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user posted image
GRRRRRR 
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