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Our Tutors


Joseph Lawson


Joseph is the Head of Academics at AFEX Group. As Regional Manager of Afex Group in East Africa, Joseph guides students as they navigate the U.S. and Canadian college applications process. Joseph is an experienced SAT tutor and has assisted over 150 students to place in the top 5% of all test takers worldwide. He is an alumnus of the University of Ghana and a Certified Project Manager Professional.


Brian Fleischer


After scoring in the top 1% of all test takers for the SAT, he proceeded to Stanford University where he studied Human Biology and African Studies. At Stanford, he served as a Resident Assistant during his junior and senior years where he facilitated community building and mentored his peers. Brian will be continuing to medical school this fall at the David Geffen School of Medicine at UCLA. A teaching assistant at Stanford and an SAT tutor for the past 5 years, Brian is excited to bring into his classes his energy, expertise, and insight.


John Koomson


John’s perfect score in the SAT Mathematics and the Math 2 subject test helped secure him a full scholarship to study Computer Science and Mathematics at Amherst College. He is currently a Koenig scholar, a Meiklejohn Fellow, and a Math Tutor Fellow - by professor’s recommendation - for the Department of Mathematics and Statistics. As part of his duties as a Math Tutor fellow, John provides extra assistance to students in Calculus and ensures they get the directed focus they need to succeed. Having previously worked as a Math tutor at AFEX and served as a Conversation Partner for the Five College Center for the study of World Languages, John has a lot of experience in conveying new information in a manner which can be easily understood by students and hopes to help his students realize how interesting and fun mathematics can be.


Nana Akua Mensah


Nana Akua Mensah scored in the 99th percentile for the SAT, making a perfect score on Critical Reading, and went on to study English at Yale University. She worked in curriculum development and as an instructor for the Yale Young African Scholars Program and worked with the Yale Center for International and Professional Experience to help students find study abroad programs to suit their interests and academic strengths. She is excited to work with students to boost their scores and college preparedness.


Prince Tuffour


As one of the most passionate SAT tutors in Afex, Prince wrote the SAT twice and had a perfect Math score in all the tests. Prince worked with Future Leaders Education Empowerment Foundation(FLEEF) Ghana as a mentor and a tutor. As the valedictorian in the Mathematics Department at Kwame Nkrumah University of Science and Technology, Prince established an organization to assist his fellow students in various topics in Mathematics in the department. Having an innate passion for teaching, Prince always has a unique way of making math fun and easier to understand. Prince has assisted more than 100 students in scoring above the 96th percentile in SAT math and is excited about working with students.


Sandra Mwangi


Achieving scores in the top 1% in the world, Sandra is a brilliant and passionate teacher who loves to rekindle in students a love for Mathematics even among students who struggle with the subject. She got admitted into Princeton University, CALTECH and Columbia University. She looks forward to meeting curious minds in her classroom.


Kuei Yai


Kuei Yai scored in the top 1% in the SAT math twice, with a perfect math score both times. She also achieved a perfect score in her Math 2 Subject Test. As a math tutor, Kuei has helped numerous students with their methods of approaching mathematical problems. She looks forward to sharing her knowledge and enthusiasm with students looking to perform well in the SAT.


Richard Ntiamoah


A first-class honors Graduate in Statistics at Kwame Nkrumah University of Science and Technology (K.N.U.S.T) and currently a Financial Aid Consultant and Mathematics Tutor at AFEX Group. Ntiamoah is passion-driven when it comes to empowering students to foster their interest in the study of Mathematics Programs and eradicating the negative perception students and the society have about the subject. He was the president of the Mathematics students’ associations both at K.N.U.S.T and at the national level. Having mastered teaching SAT, GRE & GMAT Quantitative, Ntiamoah is well acquainted with the curriculum and knows what it takes to achieve grades! He has helped at least 43 students to attain an SAT Math score that falls in the 96th percentile together with test-takers globally. His style of teaching includes usage of real-life situations in explaining various Mathematics concepts. He believes that this helps students to understand, organize, analyze and structure their Mathematics knowledge and apply it as required by the test in getting the students ready for college and graduate school.

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