I've had three kids go through kindergarten. At the conferences, the teachers have had a prepared list of assessment results that they want to cover. There is no real conversation that happens. Be prepared for them to tell you that your kid got everything right and not to see any problems with that or need to change their curriculum. As mon said, I think that the best you can do is ask when you can schedule your next meeting to discuss a grade skip, subject acceleration, etc. and discuss the process to make this happen.