Past Exams

Syllabus
Physical Constants

The IOAA Problem Book (2007–present) PDF contains all problem statements and all available official solution material, organized by topic. The complete LaTeX source is available on GitHub.

USAAAO’s past exams can be found here:

2026First RoundExamSolutions
NACExamSolutions
Third ExamTheory ExamTheory Solutions
Practical ExamPractical Solutions
Practical Answer Sheet
2025First RoundExamSolutions
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2024First RoundExamSolutions
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2023First RoundExamSolutions
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2022First RoundExamSolutions
NACExamSolutions
2021First RoundExamSolutions
NACExamSolutions
2020First RoundExamSolutions
NACExam Version 1
Exam Version 2		Solutions l
Solutions 2
2019First RoundExamSolutions
NACExamSolutions
2018First RoundExamSolutions
NACExamSolutions
2017First RoundSolutions
NACSolutions
2016First RoundExamSolutions
NACExam
2015Practice RoundExamSolutions
First RoundExamSolutions
NACExamSolutions
2014NACExamSolutions