This thesis examined the impact of teacher quality and the socioeconomic status of students on school performance on the Texas Assessment of Knowledge and Skills Test. The data were obtained from the Academic Excellence Indicator System (AEIS) 2005-2006 Report. Disparities in education were used to examine the use of teacher quality in the No Child Left Behind Act of 2001. A multiple regression model was used and included other factors such as socioeconomic status of students, teacher salary, school funding, and student-teacher ratio. Using an ordinary least squares regression, I found that socioeconomic status of students had the most significant impact school performance. Two other variables, teacher salary and student-teacher ratio, had a significant effect on school performance suggesting alternative means of eliminating inequality in education.