The purpose of this research was to explore the impact of school climate on the achievement of third and fourth grade students who are economically disadvantaged in Mathematics and Reading/Language Arts. Students' perception of school climate was studied using the "Tripod Survey" variables of a caring, captivating, and academically challenging school climate. The study examined students' perceptions of their schools using the "Tripod Survey" to determine the impact of school climate on achievement in the subjects of Mathematics and Reading/Language Arts of students in the third and fourth grades who are economically disadvantaged. Additionally this study examined the relationship of a caring, captivating, and challenging school climate, and the percentage of students who are economically disadvantaged in predicting achievement of third and fourth grade students who are economically disadvantaged in the subjects of Mathematics and Reading/Language Arts. To determine the impact of a caring, captivating, and challenging school climate achievement on the Tennessee Comprehensive Achievement Program (TCAP) in the subjects of Mathematics and Reading/Language Arts, Pearson "r" and multiple regression analyses were conducted. It was found that a caring school climate positively affected the achievement of third and fourth grade students who are economically disadvantaged in both Mathematics and Reading/Language Arts. In the presence of an academically challenging school climate, achievement of third and fourth achievement was impacted in a positive way in the subject of Mathematics. [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/en-US/products/dissertations/individuals.shtml.]