A discussion and application of the Appalachia Preschool Test (APT) are presented. This test was developed to supplement the standardized instruments in use to measure program performance. It consists of two principal subtests, an introductory interview, and a section measuring logical reasoning and reading skill achievement. It is noted that the APT measures only cognitive program objectives of a curriculum specific nature and concentrates primarily on those which are amenable to multiple choice or sentence completion format. Application of the APT administered during the third year of the Program's development indicate significant treatment effects for the groups viewing the television program and visited by a paraprofessional. The mobile van used appeared to have an effect on the child's ability to establish rapport with the tester and seemed to increase the involvement of older boys in the program. An analysis of the data from the third year's evaluation reinforces conclusions reached in evaluations of the two previous years--that is, the television program provides the "raw material" for the curriculum, while the home visitor effectively reinforces the program's cognitive objectives. (Author/CK)