JOHN XXIII College hosted a two-day chess tournament in June.
More than 40 teams in A, B and C grades converged at the school in the Thomas Moore Exhibition Centre to test their skills against teach other.
Dennis Holland from Total Chess kept score throughout the two days.
John XXIII student Sarah Few was the only girl in her team and held her own against the boys, often beating them.
Teams from Deanmore, Cottesloe and South Perth primary schools and John XXIII won medals.
Another tournament will be held in Term Three.