Dropping out of high school creates barriers to economic self-sufficiency. Career and technical education (CTE) may help students engage with school by showing the connection between school and work. Prior research has shown that high school CTE participation promotes positive academic outcomes including high school graduation. This paper uses a quasi-experimental design to examine the association between certifications and on-time high school graduation. Our findings indicate that certifications exert a meaningful influence on the likelihood of high school graduation, and that the effect is stronger for students who are at risk for dropping out or are economically disadvantaged.