Jayce Prohaska, a black belt in taekwondo, rolls with changes for Mother McAuley. ‘Discipline in what we do.’

Jayce Prohaska, a black belt in taekwondo, rolls with changes for Mother McAuley. ‘Discipline in what we do.’

Back in third grade, Mother McAuley’s Jayce Prohaska earned a black belt in taekwondo. The junior right-side hitter and her older sister, Cayla, did all the requisite punching, kicking and breaking of boards. But it was the noncontact aspect of taekwondo that proved invaluable. “It made you have respect for your parents and respect others,” said Jayce, who’s eyeing a gold medal with the state playoffs kicking off next week. “It gave you discipli…