After the Mandatory Attendance Age Change (IMAGE) University of Southern California Caption The analysis shows that students who were affected by the 1972 mandatory attendance age change to 16 had a lower rate of unhealthy weight. Credit USC Dornsife, Center for Economic and Social Research Usage Restrictions Please credit USC Dornsife License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.