John Diehl

About the Author

John Diehl is a seasoned educator and test preparation expert with over two decades of experience in mathematics instruction and curriculum development. Holding advanced degrees in mathematics and education, he has dedicated his career to demystifying complex concepts for students preparing for standardized exams. Diehl's approach emphasizes practical strategies, clear explanations, and real-world applications, making abstract math accessible and engaging. As the author of McGraw-Hill Education SAT Subject Test Math Level 2, Fourth Edition, he has empowered thousands of high school students to achieve top scores on the SAT Math Level 2 exam. Beyond writing, Diehl lectures at universities and consults for educational organizations, passionate about fostering mathematical confidence in the next generation.