«Only a voucher offer and mere chance distinguish the treatment students from their control group counterparts,» Wolf explains. (educationnext.org)
Smaller schools boosted college - going rates for black males by 11.3 percentage points, «a 36 percent increase relative to the enrollment rate of their control group counterparts.» (ruraledu.org)
After the first year, when TTI teachers were still receiving payments for remaining in their schools, teachers in the TTI group returned to their schools at significantly higher rates than their control group counterparts: 93 versus 71 percent. (edimpactlab.com)