Hi dgoldstein

Currently, it isn't possible to link any Khan Academy accounts, Teacher/Coach or Learner accounts. You can read about why that's not possible via this link:  https://khanacademy.zendesk.com/hc/en-us/articles/202487490-Can-I-transfer-accounts-from-one-email-address-to-another-or-combine-accounts- 

This feature has been requested by students and teachers alike, so it might become an option in the near future!

Best regards, pinkpuppy22

Thank you!