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Activities Offered at GCHS
- Thespian Troupe 657: Humphrey
- FBLA: Tregonning
- DECA: Tregonning
- Band: Farr
- Art Club: Wilson
- Choir: Green
- Diversity Union: TBD
- Orchestra: Walden
- Yearbook (Spud): McGlaughlin
- SAFE: Longnecker
- Senior Mentors: TBD
- Forensics: French & Rust
- LULAC: Cardenas
- TSA: B. Alexander
- Student Council: Longnecker & Tregoning
- Cat’s Cradle: Harwood
- Key Club: J. Alexander
- Link Crew: Rahn & Davis
- Green Cats: De Losh
- FCCLA: Appelhans, Valdez & Hartman
- Highlight (Newspaper): TBD