Nora Mantell, MEd

Director, founder & owner

Lexington Tutoring, LLC builds self-confidence and fosters academic success by patient, expert, individualized homework coaching, remedial tutoring and enrichment in almost all academic subjects, including support for students whose academic difficulties are associated with learning disabilities. Here's what students and parents are saying about our work.

Nora, the owner, creator and director of Lexington Tutoring, LLC, is a veteran Massachusetts teacher with over 3 decades of high school and college teaching experience. Under Nora's guidance, Lexington Tutoring, LLC has served students at almost all of the public and private K-12 schools and colleges in MetroWest, MetroNorth and the Greater Boston area.

Nora can be reached directly at 781-652-9649 or at

Nevin Katz, MEd

Biology, chemistry, physics, earth science, meteorology, world history, U.S. history, ancient history, English, algebra 1 & 2, geometry, trigonometry, precalculus & calculus; writing coaching, web design & front-end web development (HTML, CSS, Adobe Tools--Illustrator, Flash, Dreamweaver, InDesign & Photoshop); homework coaching K-12 & college & executive function coaching

MCAS, SAT, ACT & SAT II Subject Test prep: Math I, Math II, Physics, Chemistry & Biology

AP tutoring & exam prep: Biology & Chemistry

MTEL prep: Mathematics (47), Mathematics (09), History (06), Biology, Earth Science & Chemistry

GRE prep

Nevin Katz is an online curriculum specialist at the Education Development Center in Newton and an ace homework coach and science/math/humanities tutor. He graduated from Swarthmore College, where he majored in biology and did additional work in chemistry. After earning his EdM. in Teaching and Curriculum at the Harvard Graduate School of Education, he taught at the secondary level for eight years.

Nevin, our lead writing coach and one of our two lead SAT/ACT/SAT II prep coaches is the author and illustrator of the Dr. Birdley Teaches Science series, a nationally published set of teacher resource books for secondary school classrooms. In his current role at EDC, Nevin conducts online professional development for educators and develops content, graphics, and multimedia for online courses in science, math, history and language arts.

Some of the many thank-you emails we have received from Nevin's students and their parents are posted on this page of our website.

Michael Bertini, MS

Algebra, geometry, trig, pre-calc, calculus, statistics, chemistry, physics, college &  graduate school selection & application essay support; finance, accounting & MBA courses; English, government &  politics, macroeconomics, microeconomics & history; executive function coaching; homework coachingwriting coaching

GMAT & GRE prep

MCAS, SAT, ACT & SAT II Subject Tests: Math I, Math II, Physics & Chemistry

AP tutoring & exam prep: Chemistry, Physics 1 & 2, Physics C: Electricity and Magnetism, Calculus AB, Calculus BC, Macroeconomics, Microeconomics & Statistics

Michael Bertini holds a BS in Mechanical Engineering from Worcester Polytechnic Institute, a MS in Management from Rensselaer, and a MS in International Economics and Finance from Brandeis University. He is currently pursuing a PhD in International Economics and Finance at Brandeis University. Mike recently joined our team, having been selected from quite a few qualified applicants for the depth and diversity of his academic background and his numerous awards and honors.

After graduating from WPI, Michael worked as an engineer for Otis Elevator. While working full-time time, he earned his masters part-time. With the encouragement of his professors, Mike decided to pursue a PhD in Economics at Brandeis. He has served as a Brandeis International Business School Leadership Fellow for two years, welcoming new graduate students to Brandeis. Last year he won Outstanding Teaching Assistant award for his work with incoming masters students. He has taught undergraduate economics courses at both Brandeis and Boston College. While at Boston College, he built and taught a novel elective course called, “The Economics of Social Security and Healthcare,” which received much praise from his students. Michael is always looking for opportunities to combine theory with practical applications to make material come alive.

When he is not tutoring or in the classroom, Michael enjoys spending time farming the land that he rents every year, playing squash, jogging, and reading the classics.

Raghav Seth, BA

Biology, chemistry, physics, genetics, algebra,geometry, trigonometry, pre-calculus, calculus, statistics & probability; writing coaching & homework coaching K-12 & college

MCAS, SAT, ACT & SAT II Subject Test prep: Biology, Chemistry, Math I & Math II

AP tutoring & exam prep: Biology, Chemistry, Calculus AB & Calculus BC

Raghav Seth, the newest addition to our team, graduated from Tufts University in 2012 with a BA in Philosophy summa cum laude, having completed his pre-medical coursework. With a 3.86 GPA, Raghav was a consistent Dean’s List student at Tufts and was elected to the Phi Beta Kappa Society.

Raghav’s enthusiasm for tutoring began in college while mentoring 1st and 2nd year undergraduates in introductory biology and chemistry courses. He continued tutoring while working as a research assistant at the McGovern Institute for Brain Research at MIT after graduation. Raghav is continually striving to inspire his students and to help them reach the next level in their learning.

When not tutoring, Raghav is deep into coursework at Tufts University School of Medicine as a 1st year medical student. Raghav is an avid reader and is excited about his recent foray into the culinary arts.

Greg Andrus, BS

Pre-algebra, algebra, geometry, trigonometry, precalculus, calculus, linear algebra, probability & statistics; fourier series & partial differential equations, differential equations, multivariable calculus, physics (w/ & w/o calculus), electricity & magnetism, circuit theory, power electronics, chemistry; economic decision making; basic Chinese, Spanish & homework coaching across the high school & some college curriculums; music theory & introduction to computer science

SAT, ACT & SAT II Subject Tests: Math I, Math II & Physics

AP tutoring & exam prep: Statistics, Calculus AB, Calculus BC, Physics 1 & Physics C: Electricity and Magnetism

Greg Andrus graduated in 2013 with a 3.86 GPA from Northeastern University with his BS degree in Electrical Engineering and a minor in mathematics (Summa Cum Laude). When he is not homework coaching and tutoring math and science with Lexington Tutoring, LLC, Greg is a printed circuit board design engineer at Bose where he works in the Product Development team of the Automotive Systems Division.

Greg comes to us with a good deal of previous tutoring experience with Beta Gamma Epsilon, the engineering fraternity, with the Eta Kappa Nu and Tau Beta Pi honor societies and through the department of Electrical and Computer Engineering at Northeastern. He is currently pursuing his MS in Engineering Management at Northeastern.

During his high school years, Greg earned a 3.6 GPA, acquired the rank of Eagle Scout, scored 740 on his Math I SAT II test, 750 on his Math II SAT II tests, 5 on his AP Calculus BC test and 5 on his AP Statistics test. He received the Tau Beta Pi Forge Scholarship No. 2 in 2012.

Greg has been much praised by his co-workers and former professors for his superb organizational skills, the breadth and depth of his knowledge base, his energetic, positive attitude, his genuine desire to help others and his varied enthusiasms, which include playing piano and guitar and designing electronic equipment.

Ajay Ghadiyaram, MS

Pre-algebra, algebra 1 & 2, matrix algebra, geometry, trig, pre-calc, calculus, multivariate calculus, physics, US history & homework coaching across the high school & some college curriculums

SAT, ACT & SAT II Subject Tests: Math I, Math II & Physics

AP tutoring & exam prep: Physics 1, 2 & C, Computer Science A, Calculus AB, Calculus BC & US Government

Ajay Gadiyaram is a  young cyber security engineer with his BS and MS in Electrical and Computer Engineering from Carnegie Mellon University, some previous tutoring experience and the kind of easy going personality,  impressively diverse skill set and contagious enthusiasm we look for in additions to our team.

Ajay is a graduate of Thomas Jefferson High School for Science and Technology, Fairfax County, Va, recently called, by Newsweek, "the most selective public high school in America,” renowned for its talented faculty and high SAT and ACT scores. and ranked by US News and World Report as the 4th best selective high school for the gifted and talented in the USA. At Jefferson, Ajay was inducted into the National Honor Society based upon cumulative GPA, leadership, and community service. He scored above 700 on all three sections of the SAT and in the Math II, Physics, and US History SAT II tests. He received a score of 5 on both the AP Calculus BC (AB subscore - 5) and AP Government exams.

In addition to tutoring, Ajay also enjoys working with DSO Global, a non-profit startup that works with international development clients on various causes such as sustainability, education, health, and human empowerment. 

Amy Berninger, MPh

Algebra, geometry, statistics, probability, health, college selection & application essay support, English & American lit & composition, American & world history, earth science, biology, chemistry & art history; homework coaching in all of the above plus trig, precalculus, physics, psychology  & anthropology & executive function coaching

SAT, ACT & GRE prep; SAT II Subject Tests: Biology

AP tutoring & exam prep: Statistics, Biology, U.S. History, Art History & English

Amy Berninger has her BS in Human Biology from the State University of New York at Albany and her Master of Public Health in Epidemiology from Boston University. When she is not homework coaching and tutoring science and math with Lexington Tutoring, LLC, Amy is a researcher in program implementation and policy evaluation at Abt Associates in Cambridge, where she provides statistical analysis and research support for several social and economic policy projects.

Amy’s enthusiasm for helping her students to succeed, her experience in quantitative and qualitative research methods, her top-notch writing, organizational, planning, and communication skills, her competence in assessing priorities, her excellent interpersonal skills, her strong project management skills and her software expertise all contribute to her effectiveness as a tutor and homework coach.

Brandon Robinson, MEng

Algebra, geometry, trig, pre-calc, calculus, statistics, college selection & application essay support, economics, negotiation, accounting, financial literacy & investment, writing (creative, technical, essay, research papers), English & American lit & composition, history & executive function coaching; homework coaching in a vast array of courses including earth science, biology, chemistry, physics, cinematography & philosophy

SAT, ACT & GRE prep; SAT II Subject Tests: Math I, Math II, Physics, United States History & World History

AP tutoring & exam prep: Physics 1 & 2, Physics C, Calculus AB, World History, European History & United States History

MTEL prep: Physics, Mathematics, Mathematics (Elementary), Mathematics (Middle School) & Technology/Engineering

When he's not working with us as a math and history tutor, an absolutely stellar homework coach with a talent for adding substantially to his students' organizational skills and a top-notch writing coach, Brandon Robinson is the principal partner and asset manager at a MetroWest investment firm. See this page of our website for some of the thank you emails we've received from the parents of Brandon's students.

Before settling in finance, Brandon worked on large-scale national defense projects as a systems engineer at Raytheon and General Dynamics. He has a BS in Mechanical Engineering and a Masters in Systems Engineering from Cornell University. At Cornell he founded and ran the CU Snake Arm Team, a for-credit student robotics project to advance highly articulated robotic arms for use in nuclear, aerospace, and medical industries. Brandon has authored and presented papers at the International Council on Systems Engineering (INCOSE - Toulouse, France 2004) and various American Society of Mechanical Engineers (ASME) conferences. His other enthusiasms include football, vocal performance and flying.

Megan Joiner, BS

Algebra 1 & 2; geometry; trigonometry; precalculus; calculus; linear algebra; matrix theory; probability; statistics; physics (w/ & w/o calculus); writing coaching; homework coaching K-12 & college, including Spanish I & II & executive function coaching

MCAS, SAT, ACT & GRE prep; SAT II Subject Tests: Math I, Math II &  Physics

AP tutoring & exam prep: Statistics, Calculus AB, Calculus BC & Physics 1, 2 & C

When she's not homework coaching, math tutoring or providing GRE, SAT, ACT, and SAT II prep to our students, Megan Joiner is an engineer at iRobot where she specializes in optimizing their line of household care robots.  

Megan has her BS in Electromechanical Engineering from Wentworth Institute of Technology. She graduated valedictorian of her class, Dean's List, recipient of the Arioch Scholarship (awarded to students who have demonstrated both academic achievement and active involvement in their school and community), the Presidential Award and Wentworth’s Beatty Award for academic excellence. 

Megan's passion for math, science and engineering, her commitment to academic excellence and her superb planning, communication and organizational skills all contribute to her effectiveness as a tutor and homework coach.

Jonathan Langford, BS

Biology, chemistry & physics; honors & standard levels of earth science, algebra 1 & 2, geometry, trigonometry, precalculus, calculus & statistics; psychology; math, science, history & Spanish homework coaching, 9-12 & college & executive function coaching

SAT prep; SAT II Subject Tests: Physics, Chemistry & Biology

AP tutoring & exam prep: Physics 1, Chemistry & Biology

Jonathan Langford joined our group in July of 2014, having been selected from quite a few qualified applicants for the depth of his science/math talents, his contagious enthusiasm and his stellar organizational skills. He has dual Bachelor of Science degrees in Neuroscience and Biology from the University of Massachusetts Amherst, where he was Dean’s list and a member of the National Honor Society of Neuroscience, on an eventual path to his doctoral degree in PhD in pharmaceutical sciences. While at UMass, Jon volunteered at a transitional living center assisting the homeless, worked with orthopedic surgeons in medical training, and was an undergraduate research assistant. Jon is also an avid outdoorsman, botanist, and musician.

Jon offers tutoring in the biological sciences, chemistry, neuroscience, psychology, math, and physics and provides math, science, history and Spanish homework coaching, SAT prep and SAT II Physics, Chemistry and Biology prep.


Members of our learning disabilities team

Joshua Sanford, MEd

Pre-algebra, algebra I, world history, ancient history, U.S. History, English & language arts, writing coaching & homework coaching K-12 & college; executive function coaching & learning disabilities support

HiSet, MCAS, SAT & ACT prep

MTEL prep: Communication & Literacy Skills (01): Reading Subtest; Writing Subtest General Curriculum (03): Multi-Subject Subtest Multiple-Choice Question Analyses; Mathematics Subtest, Foundations of Reading (90), Mathematics (Elementary School) (53), Middle School Humanities (English/History), English (07) & History (06)

Praxis I prep; Praxis II prep: Maine, New Hampshire, Connecticut, Vermont & Rhode Island--English & Social Studies

Josh Sanford, MEd is a seasoned, certified special education teacher with a long list of present and former students who have soared under his guidance. He has his BA from Bates College in Classical and Medieval Studies with a secondary concentration in Educational Studies, his Masters in Education from Lesley University, Special Education – Moderate 5-12 and History 8-12 licensure, 12 years of experience in working in Special Education, solid credentials for tutoring social studies, science, math, language arts and 4 years of absolutely outstanding work with us. His demanding liberal arts undergraduate education has given him a strong base in United States history, pre-algebra, algebra, American literature, life skills and emotional/social coping skills.

Josh has considerable experience with a variety of disabilities, including ADD, ADHD, executive function disorders, dyslexia, dysgraphia and autism spectrum disorders including Asperger’s syndrome, mood disorders and other learning disabilities characterized by slow processing speed. Josh is adept at developing strong communication skills, fostering and promoting student strengths, and focusing on problem solving to internalize academic skills. He is trained in Cognitive Behavioral Theory and crisis intervention. His warm, friendly-but-firm manner, his use of humor and engaging questions to build rapport and his impressive academic background are very conducive to productive and effective homework coaching.

When he's not working with our students, Josh teaches at Mansfield High School. His previous experience includes 5 years teaching at The Gifford School in Weston, Massachusetts, 2 years teaching at Casa Pacifica, in Ventura, California and 1 year teaching at Crotched Mountain Rehabilitation Center, in New Hampshire.

Bryan Rotundo, MEd

AP, honors & standard levels of American history & world history; standard levels of algebra I & II, geometry & intro to statistics, ancient history, English, biology, Earth science & Spanish 1; writing coaching, learning disabilities & executive function coaching, support for students with social/emotional needs & homework coaching K-12 & college

HiSet, MCAS & SAT prep

MTEL prep: Communication & Literacy Skills (01): Reading Subtest; Writing Subtest; General Curriculum (03): Multi-Subject Subtest Multiple-Choice Question Analyses & Mathematics Subtest; Foundations of Reading (90), Mathematics (Elementary School) (53)

Bryan Rotundo has his MEd in Special Education from Lesley University and his BA in Marketing from Siena College. When he's not working with our students, Bryan runs a program at a MetroWest middle school, where he provides students with skill development, executive function support and academic reinforcement. He focuses on developing and teaching individualized strategies that improve self-advocacy, organization, prioritization, time management, and metacognition skills. He is experienced at designing individualized instruction and at identifying the learning styles and strengths of his students, including those with ADD, ADHD, selective mutism, mood disorders and emotional disabilities.

Bryan combines a broad knowledge range with a kind, approachable personality and a genuine love for teaching. Along with academic tutoring, Bryan focuses on organization, time management, prioritization, self-advocacy, test taking, and goal-setting skills.

Before pursuing his career in education, Bryan led African safaris, worked with teachers to plan educational trips throughout the U.S., and performed musically throughout New England as a acoustic rock guitarist and songwriter.

Jessie Brauer, MSEd

Prealgebra & algebra 1, precalculus, biology, English, American, ancient & world history; homework coaching; computer skills training; learning disabilities & executive function coaching & educational advocacy for students with special needs; K-12 reading, writing & math support

HiSet, MCAS, ACT & SAT prep

Jessie Brauer has her BS in Special Education and General Education with a concentration in natural science from SUNY, Geneseo and her MS in Literacy from Nazareth College. She holds three New York State certifications: Reading Teacher K-12, Special Education K-12 and Elementary Education N-6 and two California certifications: Education Specialist for mild/moderate disabilities and Content Specialist in Reading.

Jessie has 11 years of experience teaching elementary, middle and high school students with a wide range of ability levels including students on the autism spectrum, students with severe emotional disturbances, ADD, ADHD, executive functioning disorders, dsylexia, dysgraphia, and learning disabilities in reading and math. Jessie also has 2 years of experience as assistant director of the ABC International School in Tokyo, organizing the daily operation of a preschool for 150 children and supervising, training, and evaluating their staff of 40 teachers.

Jessie has been a key member of IEP development teams, administering standardized testing such as the Woodcock-Johnson IIIR and the TOWL (Test of Written Language). Jessie also utilizes informal reading assessments such as The Lois Bader Reading and Language Inventory and the Informal Reading Inventory by Burns & Roe to identify areas for reading remediation. She is trained in the Wilson Reading Program, Handwriting Without Tears, Rebecca Sitton Spelling, Life Space Crisis Intervention, Everyday Math, Applied Behavior Analysis and Positive Guidance.

Jessie's many talents include her diverse knowledge base, her substantial teaching experience, her enthusiasm for working with learning disabled students, her engaging sense of humor and her talent for utilizing behavior modification and metacognition techniques to support students through very challenging behaviors.

Courtney Cooper, MEd

K-8 homework coaching across the curriculum, K-college language arts, social studies/history, human studies & psychology tutoring; K-college writing coaching; college: tutors courses leading to a degree in human development & literacy, language arts, history, human development & psychology

HiSET & MCAS prep

Praxis I prep; Praxis II prep: Reading: 5710, Writing: 5720 & Mathematics: 5730

Courtney holds an MEd from American International College, an MS in Literacy from the University of New England, and a BA in Human Development from Wheelock College. She is currently pursuing a PhD in Educational Psychology at American International College. She is trained in the Wilson Reading Program, Lindamood Bell Learning Processes, Sharma Math, Lucy Calkins' Writing Workshop, Singapore math and Everyday Math

Previous to joining our team, Courtney had several years of teaching experience in Maine and Massachusetts independent primary, elementary and middle schools and K-12 private tutoring. Her passion for identifying students’ learning styles and assisting in student growth and understanding are at the forefront of her focus and drive her instruction. When she is not working with our students, she enjoys reading, writing, and spending time with her husband and young daughter.

Elissa Sanford, MEd

K through 5 reading, writing, math & learning disabilities support for students with special needs including developmental delays, deafness, hearing loss, autism, ADD & ADHD; primary literacy--phonemic awareness, phonics, fluency, vocabulary & comprehension, writing & spelling; American Sign Language

MTEL prep: Early Childhood (02)

CSET: Multiple Subjects Test prep

Elissa holds an MEd from California State University Northridge, a BA in Communication Disorders from the University of Colorado, Boulder, a Post-Masters Certificate in Early Education and Care: Research, Policy and Practice from the University of Massachusetts, Boston and Massachusetts Educator’s certification as a Teacher of the Deaf-All Levels (Pre/K-12). She is trained in Applied Behavior Analysis and Handwriting Without Tears.

When she is not providing early education services and learning disabilities support to our students, Elissa is an educational consultant with The Learning Center for the Deaf in Framingham. Elissa is also a Developmental Specialist for infants and toddlers with a variety of language and developmental needs at Criterion Middlesex Early Intervention, in Framingham. Elissa's previous experience includes 12 years teaching in early education and care, working primarily with Deaf and hard-of-hearing students and students with special needs, including learning disabilities, developmental delays, autism, ADD and ADHD.

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