$350? Is that subsidized? That doesn't seem possible.
A good student:teacher ratio for 1-2 year olds is 1:3, for 3 year olds is 1:5 and for 4 year olds is 1:8. Assuming an even mix, that's an overall ratio of 1:4. 350 x 4 x 12 is $17K a year per teacher, and that's only if nothing goes towards rent, supplies and the other costs of running a day care.
It's entirely possible if by daycare the person means a 1:5 or higher teacher:child ratio in a rural part of the country, or possibly just a babysitting service with a zoo of children and very few teachers.
I'm sure it's just Mom's taking kids into their home to make some money on the side. They're making less than minimum wage and aren't accounting for any rent or supplies, but it's better than the nothing they'd get staying home to look after their own kids.
My point doing the math was that a day-care as a "real" business has to charge at least double the OP's $350 a month.
A good student:teacher ratio for 1-2 year olds is 1:3, for 3 year olds is 1:5 and for 4 year olds is 1:8. Assuming an even mix, that's an overall ratio of 1:4. 350 x 4 x 12 is $17K a year per teacher, and that's only if nothing goes towards rent, supplies and the other costs of running a day care.