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
That’s the first time I hear the treatment of Rita Skeeter is transphobic. James, Sirius and McGonagall are also able to shapeshift, and they are positive characters in the books.
For the house elves, the whole SPEW plot is designed to both make Ron (and the whole Wizard word as a whole) look stupid and bigoted, and Hermione a bit too self-righteous, as teenagers can be.
Relevant reference: https://scifi.stackexchange.com/questions/122283/why-did-rowling-seemingly-make-light-of-the-house-elf-situation
I’ve seen several times that the fact that the society isn’t changed by the end of the last book as a critic, but do all work of fictions have to uphold their societies? Game of Thrones definitely isn’t becoming a democracy during the books, and Brigderton is as classist as it can be.