How do I choose which Stripe account a store product uses?
Open the product's edit page. Once your school has more than one connected Stripe account, a Stripe Account dropdown appears under Product Configuration. Leave it blank to use the school's default account, or pick a specific one.
Once a product has been purchased at least once, this setting locks and can no longer be changed on that product — this protects the accounting for orders that have already gone through. If you need future sales of a similar product to go to a different account, use Duplicate on the product and set the new copy's account instead.