Wow, this is amazing! You are lucky to have a district like this. Very nice! I guess if I were in your shoes, I would do a lot of listening while the tutor describes how things normally work. I would most definitely make sure that your son does not have to do any of the material from the class he is being pulled out of. There is zero point in doing busywork for the sake of busywork. He will be beyond what is given in that class. I am also a big believer that most schoolwork should be done in school, especially in early elementary, so I would ask that no homework be sent home if that is truly an option.

You will likely have more questions after you meet the teacher. It may be helpful to take notes and followup by email with the teacher to make sure you are on the same page.