Week three of school was greeted and entered into with baited breath. I am happy to report that things are settling - he is settling. We have had no tears at all this week.
He murmured one weak protest late Sunday night, but I was able to smother the worries before they engulfed into a raging inferno.
Monday morning: we walked to school without the chase shenanigans of previous weeks, and I managed to calmly have him seated, crossed-legged on the carpet with the other kids, without getting out the straight jacket or tranquilisers; although it is possible the teacher was wearing shin guards, just in case.
Today was a definate win; the first time he admitted to having a "good day". I am quietly relieved, but am not yet willing to stay any longer in his classroom, than is minimally required - that means brisk drop off and pick up only. Perhaps in term two, when Missy Mopps is at Kindy four days a week, I will feel that things are calm enough for me to volunteer for his class reading.
Thanks to all who offered advice, reassurance that "it gets better" and personal anecdotes - they were all required. Apologies to all I neglected while my head quietly exploded last week, I will get back to you in the next day or so.