If schools were run like Khan Lab School then they’d put students together by subject-matter capability, not age. https://support.khanacademy.org/hc/en-us/arti

If schools were run like Khan Lab School then they’d put students together by subject-matter capability, not age. https://support.khanacademy.org/hc/en-us/articles/115002683151-What-is-the-Khan-Lab-School- https://support.khanacademy.org/hc/en-us/articles/1150026831...