Denis O’Byrne

Denis is a graduate of Binghamton University with a Bachelor of Science in Mathematics and a Bachelor of Science in Mathematical Physics. As an undergraduate, Denis worked as a Teaching Assistant and tutor, having been selected by the Chairs of both the math and physics departments, the only freshman to ever be offered this role for his outstanding work assisting in upper level classes and excellent recommendations by his professors and students.

With Method Test Prep, Denis has taught numerous SAT & ACT classes and tutors students in SAT and ACT, math, physics and statistics (Algebra I/II, Geometry, AP Calculus AB, AP Calculus BC, AP Physics). He helps students by sharing his knowledge and experience to break down complex topics and providing key insights and practical applications of concepts. Using different methods and approaches, he seeks to meet the unique needs and learning styles of each student. Denis is currently enrolled in the graduate school for Applied Mathematics at Stony Brook University, working towards a Masters in Statistics and an Advanced Quantitative Finance Degree. He looks forward to helping students improve their understanding, confidence and scores to get them one step closer to their dream college or career.


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  • ACT
  • SAT
  • Math
  • Physics


  • Online
  • In Person


Long Island, New York


Stony Brook University

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