The motto of Aquinas Diocesan Grammar School is 'Veritas Liberabit'.
Diocesan College's motto is 'Pro Fide Et Patria'.
The motto of Diocesan School for Girls - Auckland - is 'Ut Serviamus'.
The motto of Bennett Memorial Diocesan School is 'Semper Tenax'.
The motto of St. Boniface Diocesan High School is 'Amor Doctrinae Floreat'.
The motto of St. John's Diocesan School for Girls is 'Laborare est Orare'.
Holy Trinity Diocesan High School's motto is 'A Special Time, Place and Spirit'.
Thomas Aquinas College's motto is 'Verum • Bonum • Pulchrum'.
Bishop McGann-Mercy Diocesan High School's motto is 'Serve the Lord with Gladness.'.
Saint Thomas Aquinas University's motto is 'Facientes Veritatem'.
Pontifical University of Saint Thomas Aquinas's motto is 'Caritas veritatis'.
Pontifical University of Saint Thomas Aquinas's motto is 'The charity of truth'.
St Mary's Diocesan School - New Zealand -'s motto is 'Fiat Voluntas Tua - Thy Will Be Done'.