This!!!!!!!! sucks
(explanation: 10th grade students' perceived self-rated ability against their percentile score on a mathematics test. There is a gender gap at every level of mathematics achievement, ie girls at all ability levels rate their abilities lower than boys)
source: Perez-Felkner, L., Nix, S., & Thomas, K. (2017). Gendered pathways: How mathematics ability beliefs shape secondary and postsecondary course and degree field choices. Frontiers in psychology, 8, 218959.