Please note in your listing whether they publish educational family games too or only classroom tools.
Here are some I looked at. I believe they all have published family games:
Pressman
Patch
didax
Educational insights
foxmind
gamewright
blue orange
And i am currently browsing the website fat brain toys, which seems to be an encyclopedia of good educational games (including their publishers).
Also, a general note for those seeking to publish children’s games: look for toy companies, not game companies!