NASHVILLE (AP) - Michelle Obama will be the guest speaker at a Nashville public school's graduation exercise next month.

The Metropolitan Nashville Public Schools announced Thursday that the first lady will address the graduating class at Martin Luther King Jr. Academic Magnet School on May 18.

Principal Schunn Turner made the announcement to students Thursday morning and the first lady announced her plans in a video played for the school.

There are no public tickets for the event.

The high school has nearly 1,200 students in grades 7 through 12 with a curriculum that emphasizes mathematics and science.