Below is a greatly simplified chart of the history of mathematics. The interesting bit is the black bar on the time line, which indicates where (optimistically) high school math stops. With calculus? I got pre-calc/trigonometry in high school, most of our incoming students haven’t had calculus yet, so it’s a little bit off.
Wait. I’ve had a fair bit of statistics…that’s early 20th century! What a relief, I won’t have to worry the ridiculous over-the-knee boots and pelisse when my classes drift into a little mathematics.