Are there climate control issues preventing children from going to school? What I mean is - do the schools have adequate HVAC to keep the school cool, or is it for another reason?
Where I grew up the weather in summer was typically over 85f.
I assume maybe 20-30 years ago the temperature was lower or there were fewer hot days where you're talking about.
I do think it's a concerning sign that instead of addressing the grander issue, the stop-gap solution is to throw more climate control everywhere though.