 Mary Searle, who received her B.A.in psychology from Mount Holyoke in 1941, married Carroll after graduation.After Mount Holyoke, Carroll taught at Indiana University (1942–43), the University of Chicago (1943–44), Harvard Graduate School of Education, ("Roy E. Larsen Professor of Education", 1949–67) and the University of North Carolina, (William R. Kenan, Jr., Professor of Psychology 1974-82, Director of L. L. Thurstone Psychometric Laboratory, 1974–79).