The skill enhancement services received by WtW enrollees typically lasted for two to six months and entailed a commitment of 10 to 20 hours per week (Exhibit III.6). Thus, receipt of these services represented a substantially larger investment in human capital than did receipt of employment preparation services. Enrollees in the Milwaukee/NOW program who participated in GED or high school education programs did so for 12 hours per week for five months, on average. Their counterparts in Nashville were even more intensively engaged in these programs, averaging 12 hours of participation per week for five months. Enrollees in the Baltimore County and St. Lucie County JHU programs who participated in advanced education programs did so for roughly 15 hours per week over an interval of three to four months, on average.