Ms. Dean and Dr. Stein are affiliated with RAND, 1700 Main Street, Santa Monica, California 90407 (e-mail, email@example.com). Dr. Jaycox is with RAND in Arlington, Virginia. Dr. Kataoka is with the University of California, Los Angeles. Ms. Wong is with the Los Angeles Unified School District. Harold Alan Pincus, M.D., and Terri L. Tanielian, M.A., are editors of this column.