The Mandan School Board approved the purchase of 49.42 acres of land for the new high school on Tuesday during a special session.
The property is located between the Mandan Middle School and the Starion Sports Complex.
In April, voters approved building a new high school with 77% of the vote in a bond referendum.
The property was purchased from Mel Heck, and Pat and Mike Wachter.
The high school is set for completion in 2024 and will accommodate approximately 1,400 students.