McClung has published more than 95 articles and his work is funded by major grants from the National Science Foundation. In his lab at Dartmouth he has trained over 95 undergraduates, 17 of whom have completed honors theses with him. In addition, he has served on the thesis committees of an additional 75 undergraduates. Six students have completed their Ph.D. studies with him. At Dartmouth he has served on and chaired numerous councils and committees, including the Molecular and Cellular Biology Graduate Committee, which administers the largest graduate program at Dartmouth. He has served on numerous competitive grant panels for the NSF, NIH and USDA. From 2003-6 he served as the chair of the Publications Committee of the American Society of Plant Biologists, which publishes two of the three top journals in plant biology in the world. He was elected president of that society from 2007-8, serving the year before and the year after as president-elect and then as immediate past president. In 2009 he was elected as a Fellow of that Society. In 2010 he was elected a Fellow of the American Association for the Advancement of Science. He also has served on the North American Arabidopsis Steering Committee and on the Arabidopsis Biological Resources Center Advisory Board.