I wouldn't say that I've had a super similar experience, but I definitely can relate to what you're feeling. I am very similar- When I put my mind to something that I enjoy, learning comes easily and it seems effortless to get good grades. Growing up, I never felt the need to study, never really had any homework because I would do it while the teacher was explaining the information to the other students, always scored highly on exams. I never really thought twice about it until I got into high school. I am taking second year of IB Biology. From what all of my classmates say, it's a very difficult course. I've had troubles making friends in the past and I thought that by being a good student, I could help others learn and show them that I was happy to be a resource for them. Completely not in an overbearing, arrogant way. Because of genuine curiosity and interest, I go head to head with my teacher on almost every topic we cover. I'm not afraid to challenge her ideas or ask an analytical question during a lecture. She welcomes the interaction actually. I realized though that what I saw as engaged, animated learning, my classmates saw as me being a teacher's pet. When I would get an answer correct, people would sort of mutter under their breath, "Of course she knows it". In a way, my attempt to be an active member in the class has actually made me more enemies than friends. So I empathize with you, long story short.