That was the case for me as well in elementary school up to the first year of junior high. Back when I was growing up, Asperger's wasn't understood, and only low functioning boys were diagnosed with autism. The reason things changed was that my family moved to the next city over, and while it was in the same school district as the schools I attended, people there were more accepting of those who are different. Before I was diagnosed as an adult, I had a summer volunteer position at a school I went to preschool at for children with disabilities, and I only did that for a couple of summers before I got sick of being talked down to as if I was as severely disabled as the preschool children were.
My IQ tests were in the above average ranges, but I did have issues with algebra and geometry, so if dyscalculia was known about when I was in school, I could have been diagnosed with that. Despite that, I was in regular classes, and I graduated high school with a 3.3 GPA, which was considered to be with honors.