This study investigates the differences in receptive language of kindergarten children who are taught by different language systems. This study compares the effectiveness of the three most widely adopted oral language systems in the state of Texas. The systems used were (A) Alpha Time, (B) Beginning Readiness Kit; Beginning to Read, Write, and Listen Kits I and II, and (c) McMillan Series R, Bank Street, Threshold K. S. Analysis of variance techniques were used to analyze statistically pretest and posttest scores derived from the sample. The .05 level of significance was used throughout the statistical analyses for rejection or retention of the null hypotheses. Preliminary analysis of data determined no systematic bias for teacher variability or for within group variability. Hypotheses 1, 2, 3, and 5 were tested using a 2 x 3 analysis of covariance. The pretest was used as the covariant in this analysis. No statistically significant differences in the classroom mean scores were determined between teaching methods, teaching methods with only girls as subjects, teaching methods with only boys as subjects, and boys and girls. Hypothesis 4, concerning the pretest differences between boys and girls, was tested using a t-test for independent samples. No statistically significant differences were found. From the findings several conclusions can be drawn. The receptive language of kindergarten children can be expected to improve when taught by any of the three selected oral language systems. Boys do not need different oral language experiences from girls; therefore the sex of the children need not be a major consideration when an oral language system is selected. Other factors which need not be major considerations in the selection of an oral language system are the race and socioeconomic level of the children.