History & Dominican Tradition

St. Dominic High School is part of nearly 90 years of Catholic secondary education in O'Fallon, Missouri.


Assumption High School (1929-1962)

In 1929, Assumption High School was established as the first parish Catholic high school in the area. It was staffed by the Sisters of the Most Precious Blood, O'Fallon. Classes took place in a four-room white school house until 1955, when a larger school building opened. Today, the cross from the original school building is proudly displayed in our main lobby to honor our school's heritage.

By 1961, Assumption's facilities could not accommodate the school's ever-increasing enrollment, so the parish petitioned the Archdiocese of St. Louis for assistance. Through the generosity of area families and the help of the Archdiocese, St. Dominic High School was established as a regional high school serving students from more than 14 parishes. The school's name recognizes the Dominican Congregation of our Lady of the Rosary, Sparkill – the sisters who responded to Cardinal Ritter's request to administer the school.


St Dominic High School (1962-present)

St. Dominic High School opened on September 4, 1962, but held its first year's classes in the old Assumption building while the new school was being built. In September 1963, students began attending classes at 31 St. Dominic Drive, the school's current location.

Since 1963, St. Dominic High School has grown, both in number of students and in campus area and facilities. Campus improvements include:

  • 2000: New academic wing, featuring 18 new classrooms and a much larger library
  • 2004: Crusader Stadium, including the Joe Haug Track and athletic field
  • 2010: Fallon Family Center
  • 2011: Amy Dickherber Performing Arts Center

At one time, as many as 13 Dominican sisters worked at the school. The final Dominican, Sr. Jeanne Margaret Stoltz, OP, left after serving St. Dominic High School for 45 years. In 2010, the former convent became the Dominican Center, housing offices and conference space for the school's advancement and accounting teams.


Our Patron: St. Dominic Guzman

St. Dominic Guzman (1170-1221) was called to preach the gospel to people who otherwise wouldn't hear God's Word. After training as a priest, Dominic realized the need for people to learn more about the gospels. He received the permission of the pope to form the Order of Preachers. These men studied at universities and traveled to the small villages and preach the Good News to peasants. In some areas, Dominican sisters established schools.

St. Dominic's life fulfilled a dream his mother had of him as a hound dog that roamed with a torch in his mouth setting the countryside on fire. He is often pictured with a star denoting the brightness of his mind.


The Four Pillars

Inspired by Dominican tradition, the Four Pillars of St. Dominic High School – Prayer, Study, Community and Service – encourage each student's lifelong growth in faith, knowledge, leadership and involvement.


School Motto

The school motto, "Fortiter In Fide," is found on the school crest. Literally translated "Bravely In Faith," this phrase means having courage in living ideals.

School Crest

The gold field represents the Church fired with the Holy Spirit. Upon this field of flame is imposed the shield of the Order of Preachers, founded by St. Dominic.

The blue field honors the Blessed Virgin Mary.

The torch represents Christ and His Truth.

The rose is symbolic of the rosary and Mary's love for her children.

The eight-pointed star represents St. Dominic as a joyful witness of Christ.


st dominic high school crest

The school crest features a coat of arms with a double charge.