All osteopathic medical students are required to take COMLEX Levels 1 and 2. COMLEX Level 3 is taken during post-graduate medical training. The National Board of Osteopathic Medical Examiners (NBOME) website provides the following description of the COMLEX exams:

"The COMLEX-USA series is designed to assess the osteopathic medical knowledge and clinical skills considered essential for osteopathic generalist physicians to practice medicine without supervision. COMLEX-USA is constructed in the context of medical problem-solving which involves clinical presentations and physician tasks." For additional information on the NBOME and COMLEX exams, please refer to the website.

Students take the COMLEX level 1 following completion of their second year and level 2 after completion of their third year. Level 3 must be taken after graduation and during residency.

First-Time Pass Rates for COMLEX-USA Level 1

Testing Cycle First-Time Pass Rate National Pass Rate
May 2018–April 2019 98.8% 93%
May 2019–April 2020 97.8% 94.3%
May 2020–April 2021 98.1% 93.7%
May 2021–April 2022* 94.4% 92.2%
May 2022–April 2023* as of July 26, 2022 96.9% 94.9%

First-Time Pass Rates for COMLEX Level 2 Cognitive Evaluation (CE)

Testing Cycle First-Time Pass Rate National Pass Rate
June 2018–May 2019 98.9% 95.6%
June 2019–May 2020 99.4% 96.8%
June 2020–May 2021 98.3% 96.5%
June 2021–May 2022* 97.6% 95%

First-Time Pass Rates for COMLEX-USA Level 2 Performance Evaluation (PE)

The NBOME indefinitely postponed the COMLEX-USA Level 2-PE in 2020. Please refer to NBOME for the latest information.

Testing Cycle First-Time Pass Rate National Pass Rate
March 2017–February 2018 92.4% 93.2%
March 2018–February 2019 92.8% 93.2%
March 2019–March 2020 90.4% 92%

First-Time Pass Rate for COMLEX-USA Level 3

Testing Cycle First-Time Pass Rate Number of Students
September 2018–December 2019 99.1% 229
January 2020–December 2020 98.7% 156
January 2021–December 2021* 97.5% 157
January 2022–December 2022* as of July 26, 2022 99.1% 105

*Data represent all test takers during the specified cycle. First-time test taker results for these cycles are not yet available from NBOME.