Southeast High School, South East High School, or Southeastern High School may refer to:
California South East High School (South Gate, California)
Florida Southeast High School (Florida) in Bradenton
Illinois Southeastern High School (Illinois) Springfield Southeast High School
Kansas South East High School (Kansas) in Cherokee, Kansas Southeast of Saline Secondary School in Gypsum Wichita High School Southeast
Michigan Southeastern High School (Detroit, Michigan)
Missouri Southeast High School (Missouri) in Kansas City, Missouri
Nebraska Lincoln Southeast High School
Ohio Southeast High School (Ohio) in Palmyra Township Southeastern High School (Chillicothe, Ohio) Southeastern Local High School (South Charleston, Ohio)
Oklahoma Southeast High School (Oklahoma City, Oklahoma)