The purpose of the current study was to investigate the difference in pro-social behavior, self-regulation, overall reading performance, Lexile levels, and teachers' perception of classroom climate of kindergarten students who received the Ready to Learn (RTL; Brigman, Lane, & Lane, 2008) classroom guidance program (treatment group: n = 173) and kindergarten students who did not receive the intervention (comparison group: n = 124). The study followed a quasi-experimental, comparison group design in which teachers completed the Child Behavior Rating Scale (CBRS) and Teacher My Class Inventory-Short Form (TMCI-SF) measures as well as collected reading data from individual students. Descriptive statistics for each of the measures, the findings from the analysis of covariance (ANCOVA) on the CBRS and TMCI-SF data, along with the multivariate analysis of covariance (MANCOVA) using the i-Ready data, and partial eta squared (etap[superscript 2]) effect sizes were calculated. The ANCOVA was conducted to determine if differences existed on the participants' pro-social behavior and self-regulation by condition. The findings revealed a statistically significant difference on the pro-social skills but did not show a statistically significant difference in self-regulation. The MANCOVA revealed statistically significant differences in overall reading performance between the treatment and comparison group; however, did not reveal statistically significant differences on the Lexile levels for the students who participated in the intervention. Finally, the ANCOVA reported a statistically significant difference in the perceived impact of the school counselor by the treatment group kindergarten as compared to the teachers in the comparison group; however, no other differences were found on the TMCI-SF scales. With these results, there is a need for further empirical research to determine the impact of the RTL program on students' academic and SEL development. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]