Do you mean like a public school teacher, but after school hours?
You might check places like Kumon or foreign language places like Baby Lingua to find what they pay their teachers. They probably won't tell you directly, but one of the job-seeking websites like Monster.com could probably tell you what you need to know.
And congrats on finding a good school fit! YAY!!!!!
Oh, and BTW...Is it wrong of me to feel driven to say "I told you so!" at this point? (Yes, it's probably wrong...)
Ah, but seriously, you know I love you and I'm THRILLED for you that it's working out, Questions! I'm so glad that you and your DS will both have a happier year this year! Happy, happy, joy, joy!