In 2023 the two AP Tests with the most students scoring the lowest were Human Geography (31.6%) and US History (29.8%).

In 2024 the two AP tests with the most students scoring the lowest grade was Human Geography with 30% getting the lowest score, and second place was Psychology and Physics 1, tied with 27%

in 2025 it was ap statistics (24% got a 1)

https://reports.collegeboard.org/media/pdf/2021-ap-student-score-distributions_1.pdf

https://apcentral.collegeboard.org/media/pdf/ap-score-distributions-by-subject-2022.pdf

https://apcentral.collegeboard.org/media/pdf/ap-score-distributions-by-subject-2023.pdf

https://apstudents.collegeboard.org/about-ap-scores/score-distributions

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