Ugh, sorry, read your post and realized you are unlicensed!

I would definitely consider the ages you are caring for and the threshold of stress you son can handle. I wouldn't leave him alone with the kids just for liability reasons. And be aware of the fact that teenagers don't manage stress as well as adults and can act out even if they don't mean to. Also, is it something your child wants to do? I would consider that.

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