Okay there is increasing your network knowledge and there is completely stuffing it up. If you want to lengthen the range of your Wireless i can can help you with that, but if you're trying to make the router send to 1 card and receive from the other, that's not possible. The router will send and receive from one IP address, it will not send to one and receive from another, if this clarifies your proposed question. The school that you're at probably have a high transfer wireless network this does not include internet. as rthompson80819 pointed out, your speed is limited by your ISP (Internet Service Provider). The school are probably on a high speed plan with their ISP because they need that speed to contribute to all the teachers and students. Thus the "smart switch" which is a component on its own.
I hope i have helped you.
Merlyn