Proxy Online Streaming Support My School Limits Bandwidth For Online Gaming And Streaming Video. How Can I Get Around This?

My school limits bandwidth for online gaming and streaming video. How can I get around this? - proxy online streaming support

I can stream video and game on Xbox Live, is awfully slow and sluggish. I called the technical support and ensure that they are effectively limited bandwidth. The current Internet connection is fast (if you browse websites), so I know this is not the problem. My friend told me that if you use a firewall to restrict myself to be a proxy server could be the answer. Ideas?