"Findings show that Year Up implemented its program with high fidelity to its design and substantially increased the training, support, and employment services young adults received. It had a large positive impact on the confirmatory outcome selected for this report—average quarterly earnings in the sixth and seventh quarters after random assignment. Average quarterly earnings were $1,895 higher for the treatment group ($5,454) than for the control group ($3,559)—a 53 percent impact. Impacts diminished but remained large (about 40 percent) over the following year. As documented briefly in this summary and at more length in Chapter 1, these earnings impacts are the largest reported to date for workforce programs tested using a randomized controlled trial (RCT) design."