Abstract: A system for computer-based testing for producing and delivering a test to an examinee includes a test driver, a storage device that stores the test definition language as a plurality of segments, and a validation expansion module that validates the plurality of segments of the test definition language and writes the at least one of the plurality of segments directly to the storage device. A method of computer-based testing includes instantiating a validation expansion module during a test production cycle and validating the plurality of segments from the source file. The method also includes instantiating the validation expansion module and loading the plurality of segments of the test definition language into the validation expansion module during a test delivery cycle.