Kids at Burks Middle School in Putnam County, Tenn., have Keith Urban to thank for no homework for the rest of the year.

Patty Sloan, a fourth-grade teacher at the school, attended Keith Urban's Knoxville, Tenn., concert on Aug. 12, and brought a sign that read, "I told my class 'No homework for the rest of the year if I get a picture or sing with you!'" Though the odds were 20,000 to 1, Keith did indeed read Patty's sign and obliged, asking her up to the stage for a picture. Patty told News Channel 5 that she used the experience as a lesson in probability. "Anything is possible if you follow your dream," she said.

She plans to keep her part of the bargain, as well, though she says the promise doesn't apply to students studying at home for tests and that any student who misses class will be expected to make up the work at home.