Teacher Car Repair

Help! I'm a middle school band teacher and my Ford Escape needs a transmission rebuild. I'm up to my eyeballs in student loan debt, so local banks won't give me the time of day and every loan I have asked for hasn't even been considered. I have no family to ask for help financially or otherwise and I'm not really sure what to do next. I have had the car for almost six years and it will be payed off in October. I'm hoping I can get at least another six years out of this car. I'm not sure what I'll do if I can't come up for the money to pay for this. Any help would be greatly appreciated!