If you work in a large school system, you probably know proxy servers as something the school district runs to block web sites. If you're a technical person, you probably have sworn more than a few times when the proxy server has prevented you from reaching a tech support site or from downloading A/V updates.
While proxy servers can be useful for protecting students from bad content, they can also prevent you from reaching useful sites. Proxify is a proxy server intended for the purpose of hiding one's use of the Internet. Sites one visit via Proxify will have no idea who the real user is. It can also prevent ISPs from spying on your Internet habits.
So how could another proxy server help you? Well, the trick is that it is possible that Proxify is not blocked by your school's proxy server. If that is the case, you can send traffic to Proxify and the blocked sites would be sent by Proxify and not by you. Your school proxy sees you linked to Proxify but not to anything that it would have blocked. So, the solution to an invasive proxy server is another proxy server.
Proxify is not without problems. If you don't pay for their service, the connection speed and use of advertisements can be bothersome. This is an emergency solution and not a routine service. If you require regular service, you may wan to consider their $80/yr price.