The students clapped and cheered as Mrs. Obama entered the cafeteria at Parklawn Elementary School in Alexandria, Va.
The first lady, who was was joined by celebrity chef Rachael Ray and Agriculture Secretary Tom Vilsack, picked up food from the lunch line before sitting with the kids and teachers.
Obama and Vilsack unveiled the updated nutrition standards for school meals required by the 2010 school nutrition bill. For more details on the new regulations, click here.
The menu, which was designed by Ray to raise awareness about the new requirements, included turkey tacos, brown rice and black bean and corn salsa, according to pool reports.
"When we send our kids to school, we have a right to expect that they won’t be eating the kind of fatty, salty, sugary foods that we're trying to keep from them when they're at home. We have a right to expect that the food they get at school is the same kind of food that we want to serve at our own kitchen tables," said Mrs. Obama in remarks at the school.
The first lady has been a champion of healthy eating and exercise, promoting her initiatives through her "Let's Move" campaign.