The hardest thing for me is/was denying my kiddo when he comes tugging on my scrubs and wants to play cars (hotwheels). When I really need to get work done, I go to the book store near out apt. I purposefully dont know the wireless password for their store, and they make strong coffee; I dont have anything to do there other than study. I have found that if I try to study at home, I always distract myself with laundry, dishes, eating, cleaning, etc. At the book store, without distractions, I can crank out 6-8 hours of studying on saturdays and sunday afternoons without flinching. You might try something like that.
It also depends on if your school has a good library and the hours they stay open, you might be better off doing that.
You also might be surprised how many people in your class are non-traditional and not only are married, but also have kids. I sure was. Out of our class of 106, 10 have kid(s) and 15 or so are married.
Best of luck, you're going to love it.