Cardinal Square
Cardinal Square is a YC Fall 2026 (F26) company. Based in San Francisco, CA, USA. Team of 2.
About Cardinal Square
Summary
Cardinal Square runs an AI-native supplemental school, pairing AI with real educators to deliver personalized daily practice in reading, writing, and math for K-12 students. It targets the same ground as tutoring chains like Kumon and Mathnasium, replacing their in-person worksheet-and-tutor model with 30-minute AI-guided sessions online. The longer-term plan is to expand from supplemental coursework into full accredited schools.
Business model
First month free, then $29 per class per month, with each class billed separately.
Go-to-market
Parents of school-age children sign up directly online with no credit card required, making it fully self-serve from the start.
From the Y Combinator listing
AI-native schools
Cardinal Square Academy is an AI-native school that brings personalized education to every student by pairing AI with real educators. We’re starting off as an online supplemental school (think an AI-native Kumon or Mathnasium) before building full, accredited schools.
Facts
- Education / Education
- San Francisco, CA, USA
- 2
- Active
- Early
Founders (1)
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