The late 1960s are often cited as the moment YA literature came into its own. S.E. Hinton's The Outsiders (1967), written when she was still a teen, is widely considered a founding text of contemporary YA fiction, notable for its realistic portrayal of teenage life and class conflict.

In the 1970s and early 1980s, authors such as Judy Blume (Are You There God? It's Me, Margaret, 1970), Robert Cormier (The Chocolate War, 1974), and Paul Zindel (The Pigman, 1968) expanded the genre's thematic range, tackling puberty, identity, family conflict, and social pressures head-on. This period is often called a golden age of YA, where “problem novels” directly confronted issues previously absent from youth books.