RAHS
- Rah (disambiguation)
- Raisbeck Aviation High School
- Redwood Alternative High School
- Reedsburg Area High School
- Rio Americano High School
- Roald Amundsen High School
- Robbinsdale Armstrong High School
- Rochester Adams High School
- Rochester Area High School (Pennsylvania)
- Rosario Advent High School
- Roseville Area High School
- Roussin Academy High School
- Royal Agricultural and Horticultural Society of South Australia
- Royal Australian Historical Society