My eg/pg ds 6.5-yr-old had a complete meltdown after school on Thursday. He was irrational and oppositional too. We kept him out of school Friday to calm down. Over the weekend, he said he didn't want to go back to school except for the picnic on the last day of school (which is actually in the evening). Though, there's only two weeks left and he had been looking forward to the activities over this week and next, we withdrew our son from school.
By the way, last week the school was doing ERB testing, including with my son's kindergarten peers. That's what pushed him over the edge, though he's been bored and fed up with the school for some time; my son is doing 3rd grade work at home but at school was stuck on mastering his addition math facts to timed tests, which was putting him off math and school. After removing him from school, I can attest that it was the school environment and my son is more like himself again.
I don't know if you've seen this SENG article (
http://www.sengifted.org/archives/a...octor-fit-in-the-care-of-gifted-children), but the emotional issues due to school are real. Sounds like your son is anxious about the tests and the pressure from it. I'd see how it goes over the summer.
