This dissertation is a study of the effect of Texas's charter high schools on diploma graduation and General Educational Development (GED) attainment. Utilizing data from the Texas Schools Project at the University of Texas at Dallas, the study follows a cohort of Texas students enrolled as 10th graders in the fall of 1999 and tracks their graduation outcomes through the summer of 2002 when they were expected to have completed high school. The analysis uses case study research and probit regression techniques to estimate the effect of charter school attendance on graduation and GED outcomes as well as the effect of individual charter school characteristics on charter students' graduation outcomes. The study's results indicate that charter school attendance has a strong negative effect on diploma graduation and a strong positive effect on GED attainment. In addition, the study finds that charter schools that offer vocational training, open entry/exit enrollment options, and charters that are operated in multiple sites or "chain" charters have positive effects on charter students' diploma graduation outcomes. Charters that offer accelerated instruction demonstrate a negative effect on diploma graduation. The study finds that charter school graduation outcomes improve as charters gain experience and that racially isolated minority charter schools experience reduced graduation outcomes. The study's results also indicate that Texas's charter high schools may be providing district schools with a means through which to offload students who may be difficult to educate. The analysis finds that districts may be pushing low-performing high school students with attendance and discipline problems into charter schools in order to avoid the effort of educating them and to improve district performance on accountability measures related to standardized test scores and graduation rates. This finding suggests that that competition from charter high schools will not provide much incentive for districts to improve their programs, undermining a central premise of school choice initiatives.

This study examined differences in retention, graduation, and dropout between students in grades 9-12 in special education and regular education in the state of Texas for school years 1992-93 through 1995-96. The purpose was to gather information regarding the possible adverse effects of increased academic standards and mandatory testing on students with disabilities. The results indicate that when compared to students in regular education, students with disabilities are significantly more likely to be retained and are not experiencing the same decline in dropout rates as regular students. There is no indication that students with disabilities have been adversely affected by school reform but the size of the school district may play a significant role in whether or not students with disabilities dropout of school.