I don't know what type of code you write, or where you went to school, but I had a professor who actually put the exam score distribution on the whiteboard afte

I don't know what type of code you write, or where you went to school, but I had a professor who actually put the exam score distribution on the whiteboard after each test in a second level CS class, and the bimodal distribution was stark. And these are people motivated or interested enough to spend their academic career pursuing it beyond intro level washout.