The purpose of this study was to estimate the reliability of 7 subtests in the National Sports Council physical fitness test battery as used in their Sports Science Division’s ‘Sarawak Project’ and Talent Development Division’s ‘Budding Talent’ (Tunas Cemerlang) programmes. The test battery was administered to a sample class of 25 students (mean age 14.2 years, s.d. 0.51) on 2 occasions, three days apart, to estimate the intraclass R using ANOVA procedures. The F-test for independence of trials (significance level of 0.05) detected a dependency for the 1500m run and the sit and reach test. High values of intraclass reliability coefficient were obtained: 0.97 (1500 m run); 0.96 (sit and reach, and 50 m run); 0.95 (agility run); 0.94 (flexed-arm hang, and sargent jump) and 0.86 (sit-up).