You don’t have to start matching up knee socks or cleaning the rust off your Roy Rogers lunchbox; but more and more seniors over the age of 60 are heading back to school this fall, along with their grandkids. You’ve likely spent decades in instructional meetings geared to your chosen career, so why would you even entertain the idea of ever stepping foot in a classroom, homework, and maybe even the pursuit of another degree? For personal enrichme…