It sounds like you took to it once you were ‘in’ - well done, you! Did your teachers brag to each other about how well they’d done ‘helping you read’? I was trotted out to perform for a visiting school-board somebody once, 7 or 8; handed me a book, serious textbook, asked me to read out loud. When I finished, they asked if I understood it & to summarize in my own words. They took the book back with an air of satisfaction, the S-BS shook hands with the principal, made congratulatory noises, he left & I went back to class.
My mother taught me to read @ 3, I was instantly voracious, reading every source of words I could find, just as I couldn’t be kept away from a piano or organ. SCHOOL had nothing to do with it, and even discouraged me from progressing at my own rate