The objective was to determine the degree to which official TSE scores are predictive of listeners' ability to understand the messages conveyed by TSE examinees. Analysis revealed a strong association between TSE score levels and judgments, reactions, and understanding of listeners. This finding applied to all TSE tasks and to nearly all of the several kinds of different evaluations made by listeners. Along with other information, the evidence gathered here should help the TSE program meet professional standards for test validation. The procedures may also prove useful in the future test development efforts as a way of determining the difficulty of speaking tasks (and possibly writing tasks).