1. A method of determining an input character based upon character recognition output of an education assessment system, the method comprising: receiving, by a processing device, a proposed value generated using character recognition, wherein the proposed value is associated with at least one handwritten character of an assessment; and determining, by the processing device, whether the proposed value is correct, by: determining a posterior probability associated with each of one or more possible characters, identifying the possible character associated with the posterior probability having a highest value, and in response to identifying the proposed value as the possible character associated with the posterior probability having a highest value, determining, by the processing device, that the proposed value is correct, otherwise, determining that the proposed value is incorrect.