Lori Skibbe, Michigan State University (IMAGE) Michigan State University Caption A study led by Michigan State University's Lori Skibbe suggests that multiple years of preschool are beneficial, but that more specific skills should be taught. Credit Michigan State University Usage Restrictions None 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.