Tiospa Zina Tribal School is a tribal K-12 school in Agency Village, South Dakota. It is from Sisseton. It is affiliated with the Bureau of Indian Education (BIE).
The school was the project of the chairperson of the area Indian tribe, a man named Rollin Ryan (he died in or before 1989).
It was established circa 1981, with an initial enrollment of 11. The area did not yet have a school prior to TZTS's opening. By 1994 the school had about 500 students. At that time there were plans to construct a replacement facility which would be designed in an eagle-like shape. By 2004 the facility had been built, with the cost being $21 million.
The school in 2003 made a Bureau of Indian Affairs-defined adequate progress level, but it did not do so in 2004.