Obama, along with chef Rachael Ray, will visit Northside & Eastside Elementary School, saluting the Clinton school district's efforts to provide nutritious food and more student exercise opportunities.
Obama and Ray will host a cooking competition between school chefs that will air March 11 on "The Rachel Ray Show." Obama will also talk about childhood obesity.
Mississippi has been trying to slim down its students since state lawmakers passed the Healthy Students Act in 2007. A 2010 federal law also mandated changes in food served to student under the federal school lunch program.
The visit is part of an Obama tour to promote the third anniversary of her "Let's Move!" initiative.