I can't imagine working at a fast food restaurant in an expensive city like San Francisco for less than $15. To get to work, you have to deal with the expense of commuting, parking, etc. so it wouldn't be worth it. Perhaps, in a less expensive area like South Dakota, the wage could be less but, anywhere you are, $15 doesn't amount to much. However, I was a lead teacher of a pre- kindergarten class with a credential and a master's degree and only made $14 an hour (had to buy my own supplies, too)!