Isabella holds a B.A. in Human Biology with a minor in Theater and Performance Studies from Stanford University. She has worked with students in a tutoring and mentoring capacity for over five years, and specializes in biology, chemistry, anatomy, and physics. Isabella will be attending medical school next year and has a passion for helping students reach their academic and personal goals.

Available in Bryn Mawr (Sundays and Tuesdays), Chestnut Hill (Wednesdays, Thursdays and Saturdays), or via Zoom. 
 

Jack graduated from Stanford University with a degree in Symbolic Systems, a multidisciplinary program drawing from Computer Science, Psychology, Philosophy, Linguistics, and Statistics, with a concentration in Cognitive Science and a minor in Theater and Performance Studies.

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Since graduating, Jack has pursued an interest in early childhood education, which began during coursework and developmental psychology research at Stanford’s Bing Nursery School. In the summer of 2023, Jack worked as a resident assistant with Stanford Summer Session and as a nutritional science researcher and educator at the Stanford Department of Medicine’s Farm to Table Camp.

Additionally, after completing a Symbolic Systems Capstone internship, Jack returned to an analyst position at the financial services company SEI in the fall of 2023.

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Available in Bryn Mawr (Sun/Tues/Thurs/Fri), Chestnut Hill (Wed/Sat) or via Zoom.  

For over three decades, Jen has been a beacon of inspiration and guidance in the realm of middle and high school mathematics. She has experience teaching at  Upper Darby High School and, more recently, the Shipley School. A proud alumna of the University of Delaware, Jen holds a B.A. in Mathematics Education.

Further enhancing her expertise, she pursued and achieved an M.A. in Mathematics from Villanova University. With an unwavering passion for mathematics, Jen thrives on tailoring her teaching methodologies to the unique needs of each student, ensuring their comprehension and success. Her dedication to the craft is evident in every lesson she delivers, making mathematics both accessible and engaging for all her students.

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Available in Bryn Mawr and via Zoom. 

Dr. Popiel received his PhD in physics from Temple University in 1990. After publishing several papers on Quantum Mechanics, he came to a fork in the road: Understand Physics more deeply by moving forward traditionally OR understand it by following the multiple paths that precede it. He chose the latter, and to that end he established a private tutoring business, where he tutored high school, college, and graduate students in math, physics, and engineering. As Einstein said: "You do not really understand something unless you can explain it to your grandmother."

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Available in Bryn Mawr or via Zoom. 

Patrick Cassidy is a longtime educator at independent and charter schools, working with both middle and upper school students in a variety of mathematics disciplines.  In addition, Patrick has been advisor to extracurricular math clubs and a coach of multiple sports during his career.  As a teacher, advisor, coach and father of teenagers, Patrick strives to educate the whole child, attending to their development as community members as well as intellectual lives.  Patrick looks forward to working with students to help them achieve their academic goals.

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Available in Chestnut Hill or via Zoom. 

Sabrina Gaitan earned her Bachelor’s degree in Civil Engineering from the University of Notre Dame and her Master’s in Structural Engineering from MIT. She has spent the last four years working in New York City as a structural engineer, leading complex projects and collaborating across teams. Sabrina has been tutoring students for several years and is passionate about mentorship and education. She has taken the SAT, SAT Subject Tests, GRE, and GMAT, and enjoys helping students build confidence, master key concepts, and develop effective test-taking strategies. She will be starting her MBA at the Wharton School in August 2025.  

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Available via Zoom

Sonia Joseph is a Chemistry and Chemical and Biomolecular Engineering dual major at the university of Pennsylvania, where she is part of the Vagelos Integrated Program of Energy Research (VIPER), a program that each year selects 25 highly qualified students from around the world. In high school she was a national merit finalist, and a Cum laude on the National Latin Exam.   Sonia scored a perfect 800 on the Math SAT, an 800 on the subject test math level II, and an 800 on the Subject Chemistry test.  Additionally, she scored a 5 on Calculus BC AP test and a 5 on the Chemistry AP test.   She graduated High School a year early because by then she completed all math and science courses available. She is an avid environmentalist constantly researching current environmental issues and sharing that information with others.  She particularly enjoys teaching math and science and, because of her family’s business, any tests related to college admissions.  She has been helping students at MJ test prep for the last 3 years.  Outside of academics she enjoys designing and sewing her own clothing, running, and cooking vegan dishes.

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Available via Zoom