The Concepts about Print (Sand) and Record of Oral Language (ROL) tests were administered three times to 29 male and 27 female kindergarten children as part of a study to determine the reliability and concurrent validity of the tests. The Sand and Metropolitan Readiness Test (MRT) were administered to the returning participants (27 males and 24 females) at the beginning of their first grade year. Intercorrelations of the Sand, ROL, and MRT subtests and composite scores were high, even when the Sand and ROL preceded the MRT by one year. Canonical correlations, using the concurrent Sand and ROL as one variable set and the MRT subtests as the second variable set, were as high as .87. Multiple and partial correlational analyses suggested that the Sand test and the MRT subtests for sound-letter correspondence, visual matching, and finding patterns measured similar abilities. The ROL and the MRT subtests for beginning consonants, school language, and listening also had considerable common variance. These findings reflect not only the reliability of the Sand and ROL but also their concurrent validity. The results support the use of the Sand and ROL tests in the early diagnosis and monitoring of language problems that may produce later reading difficulties. (Author/RL)