This final impact report describes the effect of Accelerating Opportunity (AO) on education and employment outcomes for underprepared adult learners. Designed and led by Jobs for the Future and national partners, AO allowed adults with low basic skills to enroll in integrated career pathways at community and technical colleges. The quasi-experimental impact analysis shows that AO students earned more credentials while taking fewer credits, suggesting more efficient course-taking and accelerated learning. These achievements did not translate into labor market gains in the observed timeframe for all students, though AO had strong and sustained positive earnings impacts for some student subgroups. [The University of Phoenix Foundation also funded the report. For the appendices, see ED616971.]