In 1998, the pastor of the parish of St. Thomas Aquinas lobbied the Roman Catholic Diocese of Phoenix to buy land for a future elementary and high school.

[1] On April 21, 2015, the diocese announced plans to construct a new high school in Avondale on diocesan property next to St. Thomas Aquinas parish, dedicated to St. John Paul II, canonized the previous year.

[4] The 107,000 square feet (9,900 m2) first phase, consisting of a three-story academic building and gymnasium, opened in August 2018, accepting 150 freshmen and sophomores, with about 40% of students coming from public schools.

In March 2019, Bishop Thomas Olmsted dedicated the new chapel altar, which features a relic: a lock of hair of Saint John Paul II.

Each house is named for a different saint: St. Dominic de Guzman, founder of the Dominicans; St. Lorenzo Ruiz, a Chinese Filipino martyr executed in Japan; St. Gianna Beretta Molla, an Italian doctor; St. José Sánchez del Río, a Mexican martyr of the Cristero War; St. Kateri Tekakwitha, an Algonquin–Mohawk convert; and St. Maximilian Kolbe, a Polish Franciscan killed at Auschwitz.