Seriously knowing what I know now, and living what I've lived - I'd pull him and 'homeschool' for the rest of the year. Or keep him home for a week and start looking for new schools for him to finish out the year, if you don't want him to whine to be homeschooled everytime things aren't going his way from now on.
Of course that's silly to decide now, with the report coming back on Monday. Of course you 'should' call (or better yet show up) at the school and cry your eyeballs out about how upset you are about how upset he is. Or get ready to beg on Monday that the tester call the school and 'FIX THINGS NOW.' I don't care that he got a 65 % assesment on the end of 2nd year test. Take a look at the test. It's possible that
a) he got the answers correct and was improperly graded. Not out of spite, just the human tendency to 'see' what we are sure we are going to see.
b) he got answers correct but not clearly legible.
c) he understood conceptually, but made 'careless' errors
d) he missed points for things that are simple, but he hadn't ever seen anything like before - such as 'pints/quarts' or he didn't recognize that version of the division sign, but he knows perfectly well how to divide.
What I wouldn't do is to leave him in the current situation as it. 2 months is 'forever' for a kid, and full day kindergarden is a long day to be stuck in a poor fit classroom.
It isn't normal for kindergardeners to cry in the morning before school. The school folks will care if they know and see how much this upsets you.
Let us know how Monday goes. Take good care of yourself until them.
Love andMore Love,
Grinity