what you are describing is especially detrimental to little boys.
When we were growing up, half day kindergarten was the rule as well.
Now, they are expected to spend the entire day at school, without a nap, and one recess period (althought they do go to gym too)
When we showed up at school, we didn’t know ‘nothin.
The kindergarten teachers taught us our letters and counting.
Now the kids are expected to be close to reading level before they enter school.
You should see how the kindergarten screening process has changed just from the time my oldest (18) went through - until my young ‘uns.
So - more is expected out of them.
I think if they had expected the same out of us - we might have gotten ants in our pants too.
On the other hand - I have seen genuine cases where a kid would literally rip the blinds off a window if she didn’t get her ritalin on time.
I think it is real - but I think there are too many teachers trying to “diagnose” this themselves.
That should be reserved for the pediatricians.
It might be real, but every child a teacher cannot teach is not suffering from it. Perhaps the old ways were better.