Each Public Housing Authority (KCHA and SHA) handled recruitment into the experiment and randomization separately, although they followed the same procedure. Families with at least one child below age 15 who submitted applications for Section 8 housing vouchers were asked if they would like to participate in the experiment. Families who said yes were then randomly assigned to two groups: (i) a control group that received the standard services for families with a Section 8 voucher and (ii) an experimental treatment group that was offered an additional suite of services oriented to help families move to high-opportunity areas. These additional services included information about opportunity areas, assistance in identifying available units and in getting in contact with landlords, and some financial assistance for moving expenses. Importantly, treatment group families were not required to use these services and were not required to move to higher opportunity places if they did not want to do so. For more information about the study, see the websites for Opportunity Insights, Creating Moves to Opportunity, and the Poverty Action Laboratory