Our Curriculum Team

At RSM, we believe that mathematics is a language learned over many lessons and mastered over many years. We believe that it is impossible to teach a single lesson without a roadmap of how each lesson connects to the next and how the topics covered in each grade and level will connect with the next grade. Our unique curriculum has served as our roadmap and has fueled the remarkable results we've achieved for thousands of students over the last decade and a half.

At every grade and every level, our team of experts sets clear goals for what topics should be taught, in what order, and even the techniques that best allow teachers to explain each topic. In fact, although most members of our curriculum team are highly gifted academics, each of them is first and foremost a teacher at RSM. They use their wealth of experience in the classroom as well as their strong academic background to continuously advance RSM's curriculum.


Anna Titova

M. S, Mathematics, Russian State Pedagogical University

M.S, Mathematics, University of New Hampshire

Ph.D, Mathematics Education, University of New Hampshire


Anna Joined RSM in 2018. She became engaged in the RSM curriculum work as a project consultant and later assumes a role of Director of the Curriculum Department. Prior to RSM Anna has been an associate professor of mathematics and has had over 18 years of teaching and curriculum development experience.


Sonia Hristovitch

Ph.D., Mathematics Education, Purdue University
M.S., Mathematics, Purdue
B.A., Mathematics, Park College

In addition to being an award-winning teacher with extensive classroom experience at the middle school, secondary, undergraduate, and graduate levels, Sonia is an expert in the field of mathematics curriculum and instruction.  Most recently, she has worked as a principal investigator for the University of New Hampshire to develop a curriculum and methods for New Hampshire teachers to improve middle school mathematics.

Sonia has extensive experience with mathematics education both in the US and internationally, having spent considerable time developing syllabi, assignments, and assessments to coincide with the recommendations of the National Council of Teachers of Mathematics to stress the interactive and discursive nature of mathematics teaching.


Maryna Yeroshkina

M.S., Mathematics, University of New Hampshire
B.S., Mathematics (with honors), Dnipropetrovsk State University, Ukraine

Maryna has over ten years' teaching experience at the elementary, undergraduate, and graduate levels. Her favorite type of questions do not start with “What?” or “How?” but with “Why?” and she pushes each of her students to develop a deep and lasting understanding of mathematics. She believes that there is nothing more rewarding than to hear her students declare at the end of year: “I love mathematics! Thank you for showing me its beauty!” At the University of New Hampshire, her graduate studies focused on stable homotopy theories. 


Jan Shubert

 Ph.D. in Physics, Moscow State University, Russia

Jan heads the competition program at RSM and his students are among the winners of United States national mathematical competitions, and have gone on to major in math as undergraduates at Harvard, MIT, Oxford, and Cambridge Universities. The Math Challenge program was created from Jan’s vision for a set of classes that could push students to delve further into the exciting world of advanced mathematics. 




Olga Kozlova

M.S., Mathematics, State University of St. Petersburg, Russia 

When Olga joined the RSM team in 1999, she already had over ten years of teaching experience in a math preparatory school in St. Petersburg. She was attracted to RSM’s approach to education as both a teacher and as a parent. Both of her daughters attended RSM. Olga has taught nearly every grade and every level at RSM and is working tirelessly to make sure that every class at RSM meets our high bar for quality teaching.


Alex Karezin

B.S. and M.S., Applied Mathematics, Moscow State University, Russia 

Alex brings an extensive background in content management for science and technology-related areas.  He is responsible for the coordination of the curriculum department and is leading RSM's expansion into the online frontier. He is dedicated to ensuring that our digital content is of the highest quality and that these resources will provide the same excellent education to our students online that our bricks-and-mortar students receive in the classroom.

Alexander Zelenskiy

Ph.D. in Mathematics, Moscow State University, Russia
Associate Prof. of MSU, Russia
Doctor of Science, Honoris Causa of International Academy of Natural History 

Alex has 25 years of teaching experience in STEM-oriented classes in Moscow, Russia. He is a member of the organizing committee of “Lomonosov” Olympiad. His students are constantly among winners of regional and state level Olympiads in Russia.  Author of 8 books on the student preparation methodology for various types of math contests and Olympiads. 


Hayk Sedrakyan

Ph.D. in Mathematics, University of Sorbonne (UPMC), Paris, France

Ph.D. in Mathematics, University of Padua, Padua, Italy

M.S. in Mathematics, JKU Linz, Austria and TU Kaiserslautern, Germany 


Hayk has achieved the highest levels of mathematical competition success as a winner in the International Math Olympiads (IMO) in Japan and Greece. He worked as a scientific researcher at the European Commission, was a Professor of Mathematics in Paris and simultaneously has trained students as a Math Olympiad coach in Boston, London, Paris, Singapore, Prague, Kazakhstan, Cyprus, and Armenia.  Author of 7 books published globally on the topic of problem-solving and Olympiad style mathematics.


Andrey Polin

M. S. in Mathematics and Applied Mathematics, Moscow State University, Russia


Andrey’s training in advanced probability theory and statistics makes him an indispensable member of our curriculum team. Andrey creates innovative competition-style problems and following RSM’s philosophy of keeping students challenged but not overwhelmed. Andrey continually works to design a demanding and engaging curriculum that is appropriate for each grade level.


Jennifer King

M. A., Teaching Mathematics, Boston University


Jen joined RSM in 2019 as an editor. She has taught mathematics at the middle school, high school, and college levels, and brings 15 years of curriculum development and writing experience.


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