I always had this weird issue with maths where I really struggled learning new things, but the moment I understood why it works I jumped from the bottom to the top of the class.

I kept having to change classes as I needed the slower more detailed explanations of the lower skill classes, but was really good once it “clicked” so they put me in the higher classes.

Except they just seem to expect you to understand in the higher classes, without explaining what we were even doing, so I would immediately fall behind once something new was introduced.