Please see the graph "Growth of the Math 2 Population by Major (2019-2024)". UCSD's Math 2 class is remedial high-school level maths. It has grown from under 100 students in 2016-2020, to more and more people each year starting from 2021.

UCSD tested the people who took this class, and 25% of them could not answer the question "Fill in the box: 7 + 2 = [_] + 6" (with only pencil and paper allowed, no calculators or other electronics)