I’m so glad we investing in private school K-12 for our kids. As a result our college freshman daughter told me this week that she’s feeling like she has the college thing whipped.
My primarily homeschooled son is taking Calculus I in no slouch school. At the beginning of the semester, the prof gave them some work to do. He said that only 2 or 3 kids in the whole class knew what to do with y=mx+b; something my kids learned in 9th grade at the latest (probably 8th but I don’t recall exactly)
Anyone in calculus should be able to do the slope of a line stuff in their sleep.