I wish I would've had a crystal ball about PS not GT. That part was obvious I just didn't realize how much (still not to what extent-no ind. testing but the screening was probably close). What I didn't know was exactly how ahead we were when we switched from Montessori to PS. I WISH we would've spent the past two yrs in Montessori. DD4 will get the benefit of the hindsight....And I've become an extra tutor for DD8.....