Thers a show about this idea called "are you smarter than a fifth grader"

Not everyone pays attention in school, or is capable of remembering what they learned so it could be that they're learning it all over again. Some peoole i grew up with complained that we never learned xyz while in school, but I very clearly remember learning thise things. IDK that's my best guess.

Welcome to American Education. 9th grate Biology taught at the college level. Sigh.

I can confirm I took public high school biology and did not learn about Punnett squares until my freshman year of college.

You learn the square, but by given example or posed question. This reason is probably EXACTLY why they go that route. Textbook companies are ridiculously thorough and smart.

I never learnt about the square at school, I remember learning about various hereditary/genetic things, but we never did about blood types. I can't be the only one, presumably there's hundreds of girls who did the same lessons as I did at my school, and there must be others all around the world that learnt different things to what you learnt.

I'm from the UK and didn't learn anything about blood types in school. I remember learning about hereditary traits, and things like dominant and recessive genes, but I've never seen this square before. Perhaps it's not a necessary part of the curriculum, but just an example of how genetics work.

That's nothing. First year Computer Science starts with the computer version of "this is what a plus sign looks like. Next week, we'll talk about subtraction."

Wow

I thought that too, that's one huge class!!

this