After Ava McCall retired from university teaching in June, 2015, she spent the 2015-2016 school year volunteering in a fourth-grade classroom helping to teach Wisconsin history. Her volunteer work was similar to other retired teachers in the local school district who returned to mentor new teachers, volunteer in classrooms, and serve as substitute teachers. Classroom teachers should be aware that there are retired educators interested in collaborations to enrich social studies instruction and meet some of the challenges facing social studies education. The purpose of this article is to describe the specific ways McCall contributed to more inquiry-oriented, powerful social studies instruction in an elementary classroom and to encourage practicing teachers to collaborate with retired educators from their school district or university to provide effective social studies instruction for students.