Science
Experiment-based science from kindergarten up, our national-level You Be The Solution chemistry team, and AP science tutoring.
Explore ScienceEducation for Excellence
From building confidence to winning national titles
Small classes, credentialed instructors and a clear plan for every student, from first experiments and first essays to AP exams, the SAT and national competitions. In Acton, Massachusetts.
- 2nd in the nation2025 You Be The Solution National Challenge
- $12,000National scholarship won in 2025
- 3× state championsMassachusetts chemistry team, in the last 5 years
- 3× national championsMIT Zero Robotics 2022, 2024 & 2026, code run on the ISS
- 23 schoolsPartner schools across Massachusetts
What's happening
Upcoming at C0deEX
Our mission
C0deEX helps every student in grades K–12 build strong foundations in science, English and computer science, and reach the goals that matter to them, from a first experiment or essay to AP exams, the SAT and national competitions.
About C0deEXWhat we teach
Four subjects, one standard
Every program is built around clear learning goals, regular feedback to families and instructors who know their subject.
English
Reading, writing and grammar for every grade, with SAT Reading & Writing preparation for high school students.
Explore EnglishTest Prep & AP
SAT and AP preparation in small groups or one-to-one, with diagnostic testing and timed practice.
Explore Test Prep & APComputer Science
Coding and robotics from age 6, and an Advanced level for AP Computer Science A and USACO.
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Elementary
Grades K–5
Elementary Science and Science Lab, Elementary English, and introductory coding and robotics.
Middle School
Grades 6–8
Middle School English, the You Be The Solution chemistry team, Python and FIRST LEGO League.
High School
Grades 9–12
High School English, SAT Reading & Writing, AP Computer Science A, USACO, and tutoring for AP Chemistry, Biology and Physics.
Our approach
How students learn at C0deEX
- Small classes. Groups of at most 6 students, so every student is seen and heard.
- Placement before enrollment. A short assessment puts each student at the right level, not just the right grade.
- Instructors who know their subject. Graduate degrees in chemistry and computer science, a licensed CS teacher, and competition experience up to USACO Platinum.
Recent results
Our students compete, and win
3× national champions
Our middle school teams programmed NASA's Astrobee robots and took 1st place in the nation three times, with code that runs on the International Space Station.
Zero Robotics program
2nd in the nation
Massachusetts champions who finished First Runner-Up at the National Challenge and won a $12,000 scholarship.
Chemistry team
State Innovation award
Our FLL Challenge teams reached the Massachusetts State Championship in back-to-back seasons and won the Innovation Project award in 2021.
FLL ChallengeOur team
Taught by specialists
Trina Overgaard ToupsM.S., Physical Chemistry
Richard PaulLicensed Computer Science educator
Eric ChenUCLA, Mathematics of Computation
Cooper StevensHarvard University, Mathematics and StatisticsWhat families say
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Book a free consultation
Tell us about your student and we'll recommend a program and level. Consultations take about 20 minutes, in person, by phone or by video.
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Trusted by 23 schools in 10 Massachusetts towns
Arlington, Belmont, Concord, Westford, Winchester, Tyngsboro, Andover, Northborough, Westborough and Hopkinton.