Some proxies have SSL (Secure Socket Layer) which makes it hard for filtering software to block. Please remember that school administrators can monitor network traffic. Allays be careful when using proxies as to what web sites you visit. Proxies for malicious, criminal or to view adult material is strongly ill-advised. Proxies are useful for social networking sites and the like.

(Not all Proxies work depending on the strength of security implemented)

proxy.org? Follow the link for more info

What is a proxy server? Follow the link to Wikipedia

What is SSL? Follow the link to Wikipedia

Recommended Proxy site:

Vtunnel - which uses SSL

Ixquick - Exceptional service, which helps to make surfing anonymous