We use longitudinal data on high school students in Washington State to assess the relationships between English Language Arts (ELA) teacher value added and other qualifications and the high school and postsecondary outcomes of their students. We also investigate whether these relationships differ for students with and without disabilities. We find that students assigned to 10th grade ELA teachers with higher value added have better test scores, are more likely to graduate on-time, and are more likely to attend and graduate from a four-year college than observably similar students assigned to 10th grade ELA teachers with lower value added. We also find that many of these relationships vary for students with and without disabilities, as 10th grade ELA teacher value added is more positively predictive of on-time graduation and four-year college attendance for students without disabilities, but more positively predictive of two-year college attendance and employment within two years of graduation for students with disabilities. In contrast to value added, other teacher characteristics like experience, degree level, endorsement area, and licensure test scores do not consistently predict better outcomes for students with or without disabilities.