This brief is part of a five-part series that reports findings from research conducted by ACT in collaboration with Region One Education Service Center. This brief focuses on family engagement with social and emotional learning (SEL) and includes results from surveys administered to two samples of parents/family members, one sample within Region One and one national sample. The goal of the study was to better understand parents' and family members' familiarity with and attitudes toward SEL for themselves and for their school-age children. The study examined attitudes toward SEL with a sample of families from Region One and a larger, geographically distributed sample of parents and families. Results show positive attitudes and perceptions of SEL from family members. These results are promising because positive attitudes increase the likelihood that family members are willing to participate in SEL programming. Future research can continue to examine partnerships between educators and families to develop student SE skills, especially with families from historically underrepresented communities. [For Brief 4 in the series, see ED616540. For the Executive Summary, see ED616534.]