St. Mary's High School is a private coeducational Roman Catholic high school in Natchitoches, Louisiana, United States, located in the Diocese of Alexandria.
Extracurricular activities include quiz bowl, 4-H, drama club, FCA, FBLA, BETA, and student council. Student organizations perform community service, attend conferences and conventions, sponsor activities on campus, and participate in fundraising.
St. Mary's athletics competes in the LHSAA. St. Mary's mascot is the tiger, and its school colors are blue and white.
Sports sponsored by the school include: football, girls' and boys' basketball, baseball, softball, track and field, cross country, tennis, golf, danceline, baton twirling, and cheerleading.
Football Championships
Baseball Championships
Gril's Basketball Championship