You can probably ask this at orientation and see if you like the response. I personally can't see public being more rigorous than private.

Even i am in the same boat as my kid is entering 1st grade in that school. How does teacher manage keeping 1st graders challanged with KG kids?

Can someone share how their experience was with K/1 program, where child started at Hunters Woods in first grade going from a private school, since they may be a at advanced level already.
Can understand that advanced kindergartner would have advantage in a K/1 environment but how about an advanced 1st grader. Basically are the 1st graders sub-grouped based on their academic level.

Any feedback appreciated.