In this study, differential prediction of student outcomes by race and teacher traits relative to the certification levels of novice teachers was assessed. Overall, algebra achievement was higher for students who were taught by teachers with standard certificates relative to students who were taught by novice teachers with nonstandard certificates. The most conservative estimates show that findings are equivalent to approximately 8 months of additional instruction for students who were taught by teachers with standard certificates. However, the benefits of being taught by a teacher with standard certification did not translate to underrepresented racial groups. Overall, there were several differences in dispositions across certification conditions. With respect to underrepresented racial groups, only one disposition was significantly different across conditions. Teachers with nonstandard certificates reported higher emphasis on increasing mathematics interests. For underrepresented racial groups, relationships between both certification conditions and achievement were underwhelming. Recommendations to improve teacher effectiveness are provided.