This study examined the strength and direction of the relationship between 2009 NJ ASK 3 Language Arts and Mathematics scores and district social and demographic data (i.e., lone-parent household, level of parental education, and household income levels) found in the extant literature to influence student achievement on high-stakes standardized assessments. Analysis included stepwise multiple linear regression, simultaneous multiple linear regression, and hierarchical linear regression. This study looked at the entire population of New Jersey school districts with at least 25 students enrolled in third grade in 2009. The results of this study revealed that 60 percent of school district 2009 NJ ASK 3 Math scores could be predicted within 10 points by looking solely at three out-of-school district community variables. The results of this study also revealed 52 percent of school district 2009 NJ ASK 3 Language Arts scores could be predicted within 10 points by looking solely at the same three out-of-school district community variables applied to predict 2009 NJ ASK 3 Math scores. [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.]