Thanks for the input. This entire situation is unexpected and discouraging- especially as we tried to dodge some of these bullets by selecting a private school. So yes, private school can also be a mixed bag for kids.

The good news is that I have narrowed our new school choice down- the school that we are transferring DS to has Singapore math (I use some of the workbooks at home and like it), and is strong in both science and language arts. The school also has a plan for differentiated instruction and will assess my DS from the outset.

I appreciate the insights- I'm sad to hear that so many bright kids have had similar issues in early elementary school.