Since 2015, he has worked as a teacher at the School of Rock in Dallas and Rockwall.
In 2015, Rapattoni auditioned for the fifteenth season of American Idol. On April 6, 2016, he finished the show in third place. Rapattoni was eliminated before he could sing Simon Fuller's choice song, "Say Something," and his reprise of "Hopelessly Devoted to You".
Upon his departure, he reformed his old band Fly Away Hero with new members and released a new EP "Lost and Found" on January 6, 2015. The EP charted to number 17 on the Billboard Heatseekers.
Rapattoni chose to audition for the final season of American Idol in August 2015 and placed third. The song "Strike a Match" was released after his performance on American Idol, and based on just over a day of sales, it reached number 38 on Rock Digital Songs, number 25 on Alternative Digital Songs, and number 46 on Hot Rock Songs, with 6,000 copies sold.