What is "sths"

STHS may refer to:

• St. Thomas High School (Houston, Texas), a high school for boys in Houston, Texas, USA
• Santa Teresa High School, a high school in San Jose, California, USA
• South Tahoe High School, a high school in South Lake Tahoe, California, USA
• South Terrebonne High School, a high school Bourg, Louisiana, USA
• Springfield Township High School, a high school in Oreland, Pennsylvania, USA
• Sydney Technical High School, a high school for boys in Sydney, New South Wales, Australia
• Saint Thomas Health Services, a not-for-profit group of Middle Tennessee hospitals based in Nashville, Tennessee, USA