Thanks for the school anecdote.
I was the parent of an 8th grader when the education bureaucrats decided that they knew better than the old folks. They decided to change the definitions of geometric figures. A rhombus no longer a special case of a parallelogram, and a rectangle was no longer a special case of a trapezoid, i.e. a trapezoid has only one pair of parallel sides. I explained to the teacher that if you used the latter definition in a computer program for the trapezoidal approximation method for the area under a curve, it would not work because some of the figures formed by connecting 2 points on the curve would be rectangles. I am not sure she understood, but anyway she would get in trouble for not using the “official” definition.
This is the Biden Deep State now