I have questions for you.
Would the 5th grade math be in the same building?
Would it be in the same slot as 3rd grade math is held?
Would there be any other differences in her schedule due to the change?
Does the school have a plan to help her with the daily transitions?
What does your DD think? I would suggest here that most kids might have a knee-jerk reaction that they don't want any change, but that might evolve if she has a few days to think about it and ask her own questions.
I would overall be in the pro-acceleration camp, too. But I do think that I would want the logistical questions above answered.
