I do not have experience or knowledge about that school. However, we had the experience of a WONDERFUL gifted school for one year, followed by an incredibly damaging year at the very same school. We are still dealing with the effects from it.

With that experience (which is not incredibly unusual as so much depends on the TEACHER whom you rarely get to pick and may change even if you do) I would make the decision to move for a school with extreme caution and only after several years of positive results. Things can change oh so quickly in private schools as staff changes and most will keep every penny of your tuition regardless of how egregious staff behavior may be. You could find yourself moved in to nightmare with worse choices than you started with.