DD3.75 started writing numbers all over the place including furniture so I finally gave in last week and got her started on Singapore Math K Book A. When she tried Dreambox 4 months ago, she placed around 2nd grade but I didn't think it was all that accurate since DD never appeared that advanced to us but now that we're going through SM which is supposed to be aligned with CC, I'm beginning to think that Dreambox is not that off. Looking at the SM content samples, we could have started her from 2nd grade but we're going through all workbooks starting from K and date stamping every single page for documentation, just in case we need evidence for advocacy later.