Network Sharing Dl-524

This really isn't so much a question about the router. I am currently at school running off their LAN line; I’m taking that line and running it into a router to split the connection. If I share folders they can only be seen by those connected to the router unless I was to plug directly into the schools LAN and share that way. Is there any way I can in a way bypass the router so sharing on the schools LAN is still enabled?

To clear anything up, I want to share on the schools lan while keeping my PC's plugged into the router without having to connect them directly.

figured it out... just had to disable dhcp and switch the ethernet cord over same thing you would do if you had to connect 2 routers together.

thanks anyways all