He was abducted by Hagrid when he turned 11 so that would place him maybe around the fifth or sixth grade.
I don’t know if canonically there are math classes at Hogwarts.
The thought came to while I was watching the anime Mashle. If you are into Harry Potter and One-Punch Man I’d recommend giving it a watch.
Someone mentioned this community below; I wanted to highlight it.
Small promotion for !harrypotter@literature.cafe
“Arithmancy” is their name for math classes and is mentioned several times throughout the books. It is one of Hermione’s favorite subjects.
At one point, the real world evil witch that is JK Rowling suggested that Arithmancy is like dviniation, but with math, saying they use numbers to predict the future. I take this to mean that the wizarding community discovered calculus independently from the rest of the world and mistook it for a new form of magic.
In the games, arithmancy is portrayed as number puzzles that need to be solved.
In JK Rowling’s mind the number puzzles are things like “How many genders are there?”
The correct answer, of course, is “Fuck you, JK Rowling, that’s how many.”
So crazy that a woman who liberally employed the Polyjuice Potion in her novels and had ghosts who would just wander through the restrooms to talk to you would take some of the most insanely conservative positions on changing your appearance or who should be allowed in the toilet.
Remember when Hagrid assigned his dragon the wrong gender at hatching?
Had to jog my memory, because I haven’t read these books in nearly 20 years.
But yeah. I think the Rowling of the mid-90s was relatively chill and fairly progressive, given the tone of her writing. It wasn’t until she got Disney-fied (or, I guess, Warner Brothers’d) that she took a turn. The novels really take a dive in book 5 and her political opinions just get nastier and nastier after that.
The Norberta reveal actually happens in Deathly Hallows. And frankly, I don‘t see a shift that is connected to the movies. What I actually observed was the overcompensation for criticism two books after the fact (remember Winky?) that Shaun described in his video essay.