Name | Introduction |
| Art Club | Promotes service and social events with present and past St. Louis students. Art Show is held at the end of each year.
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| Campus Ministry | Identifies and develops the gifts of members by providing involvement in spiritual opportunities.
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| Celebrate Team | Promotes a healthy, drug-free lifestyle.
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| Cheerleaders | Leads cheers and chants and rallying enthusiasm from the crowds during sporting events.
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| Drama Club | Promotes interest in theater and the dramatic arts through participation in various school events, Arts Fest, District Play Rally, student productions, and other events in the community.
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| French Club | Increases awareness of the importance of the French language and the value of different francophone cultures.
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| Junior Classical League | Focuses on increasing awareness of the heritage of the Latin language and Roman culture in modern life.
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| Key Club | Participates in events in the Greater Lake Charles area. Main focus is on children's issues and charities.
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| Library Society field trip to the McNeese Archives - Spring 2010 | Promotes the services provided by the library, joy of reading, and special activities related to libraries.
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| Mu Alpha Theta | Recognizes past advance level work and gives extended mathematical work in Calculus.
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| National Honor Society | Encourages growth in service, scholarship, leadership, and character while providing tutoring service to students.
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| Quiz Bowl | Participates in team competitions with a format similar to the Jeopardy game.
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| Show Choir | Performs rock/pop cover tunes in band type format. Entertains at many school and community functions.
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| Spanish Club | Increases awareness of the importance of the Spanish language and the value of different hispanophone cultures.
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| Student Council | Represents the/and coordinates student activities such as Homecoming and other school related activities.
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| Students for Life | Promotes the belief in dignity of life from conception to natural death.
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| Sweethearts | Performs as a dance line at athletic events, school functions, attends contests, and performs at community events.
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| Yearbook (Spectre) | Provides SLC with a yearbook as a result of work of students enrolled in the "Publications" class.
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