I taught overseas for 6 years along with my wife and was able to pay off some massive SLs and save a nice chunk of cash. Look in to benefits that your school offers. We were offered an interest free loan of up to 10% of our salary each year. I took that and just threw it at my student loans.
My advice would be to live monastically for a few years and hammer your loans to dust. It's an incredible feeling to crawl out from under a load of debt like that.
Regarding filing your US taxes while overseas, TurboTax Delux works fine for us.
tight lines
Unfortunately, our school does not offer such a thing.
Our plan is to start living more strictly, and killing the debt at a much faster rate. Wish us luck!