Originally posted by Tigger&Belle
Make sure you check into the laws of your state. In Maryland it is illegal to watch kids, even one, for $, even in the evening without a license. Some states let a person watch a few children without a license.
Of course if you are talking about the children of people you know you might be less likely to be caught since it would be word of mouth, but is something to consider.
Aside from the legal issues, how much is tough. It really depends on the going rate for daycare, babysitting, and evening programs in your area. Our local community center has occasional nights that they do this type of care and they charge $20 for residents/$30 for non-res. It runs from 6-9pm and includes pizza, crafts, games, etc. That is for grades 1-5.
I do afterschool daycare, which of course isn't the same thing, but on the rare occasion that I do drop in care I can easily get $5-8/hr. My 16yo DD babysits and gets around $7/hr for one child and $10/hr for 2 or 3 children.
Good luck! T&B