Reinventing High School
for the 21st Century

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Online learning can work, but it requires the right pedagogy and execution. We're building an innovative, digital-first curriculum, starting with extracurriculars.

Our programs are designed and led by graduates of top universities with extensive real-world experience. They are project-based, collaborative, and will get students noticed by top colleges. Prepare for the 21st century with 21st century learning.

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Our Extracurriculars

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Our online extracurriculars are collaborative, engaging, and outcome-driven. They are taught by top university graduates and experts in the field who bring practical experience to the digital classroom. With Ratio 21, you will not only acquire knowledge -- you'll also get the chance to do, make, build, and explore.
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Elite Instructors

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Meet Our Experts

Amol Sarva
Amol Sarva
Program-Lead
Founder, Investor, Professor
Casey Mok
Casey Mok
Guest Speaker
Data Scientist
Dr. Albert Lee
Dr. Albert Lee
Guest Speaker
UCLA
Dr. Jake Young
Dr. Jake Young
Guest Speaker
UCSF
Dr. Jen Rhodes
Dr. Jen Rhodes
Guest Speaker
Harvard University
Dr. Julia Raiskin
Dr. Julia Raiskin
Program-Lead
VP at Citigroup
Dr. Lindsay Papachristou
Dr. Lindsay Papachristou
Program-Lead
Amherst, New York Medical College
Dr. Pamela Peters
Dr. Pamela Peters
Program-Lead
Duke University
Jordan Sale
Jordan Sale
Guest Speaker
Founder @ 81 Cents, MBA
Kunal Bisla
Kunal Bisla
Guest Speaker
Netflix
Lisa Friscia
Lisa Friscia
Guest Speaker
Certified Health Coach
Manuel Aceituno
Manuel Aceituno
Guest Speaker
Software Engineer @
*We'll be adding more experts on a regular basis. All experts are subject to change.
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Why Ratio 21?

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Led by graduates
and experts from top universities
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Learn through hands-on, project-based doing
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Flexible to fit your schedule
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Collaborate with and learn from highly-driven peers
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Impress colleges with a truly unique experience
e-learning platform for entrepreneurs