When a family is on a payment schedule, the Parent Dashboard will specifically display the total balance for their payment schedule (i.e. the sum of all transactions associated to that schedule).
If any of the family's transactions are not associated to their payment schedule, then those transactions won't be included in the balance that parents see. As such, the family's overall "current balance" that admins see on the family's Transactions tab will not match the payment schedule balance that parents are seeing on the Dashboard.
Transactions that are not included on a family's payment schedule will be highlighted in yellow on their profile. Add the transaction to their payment schedule by double clicking the info icon and editing the payment schedule settings for the transaction. For detailed instructions, click here.