A study investigated the relationships among educationally related characteristics and month of service entry for 77,347 Navy recruits who entered the Navy between June 1982 and May 1983. Data were obtained from monthly Computer Managed Instruction (CMI) reports on Navy recruit characteristics and performance on the Gates-MacGinitie Reading Comprehension Test and the Armed Services Vocational Aptitude Battery. In addition to indicating that the typical Navy recruit had completed almost 12 years of school, the results suggested that aptitude did not vary in any consistent pattern among recruits with reading grade level (RGL) scores below 6.0, but seemed to show a pattern among recruits with reading grade scores above 6.0. Findings also showed score differences among recruits with RGL scores below 6.0 when classified by high school graduation status and month of entry into the Navy. Higher percentages of the recruits who scored below 6.0 on the RGL were high school graduates in the earlier and later months of the test period than in middle months. A higher proportion of the composite group of high school graduate recruits scored below the 6.0 RGL than was found in the composite group of nonhigh school graduate recruits. The study indicates that recruits who enter the Navy in different months of the year are likely to vary on some important factors, and that personnel need to plan for adjustments in the requirements for resources as the recruit population changes throughout the year. (HTH)