| Assumption High School | |
| Address: | 4880 Hwy 308 |
| Zipcode: | 70390 |
| Country: | United States |
| Coordinates: | 29.9462°N -91.0272°W |
| Opened: | 1948 |
| Principal: | Corey Crochet |
| Schooltype: | Public |
| Teaching Staff: | 45.04 (FTE) |
| Grades: | 912 |
| Enrollment: | 886 (2022–2023)[1] |
| Mascot: | Mustang |
| Nickname: | Mustangs |
| Ratio: | 19.67 |
| Colors: | Red and Black |
| Newspaper: | Le Śtang & The Stampede |
| Yearbook: | The Round Up |
Assumption High School (AHS) is a public secondary school located at 4880 Highway 308 in Assumption Parish, Louisiana, United States, north of the city of Napoleonville. It is a part of the Assumption Parish School Board.
The sole high school in Assumption Parish, it takes students from all parts of the parish, including Napoleonville, Labadieville, Pierre Part, Bayou L'Ourse, and Belle Rose.
Assumption High School is a comprehensive public senior high school. The school offers an honors program, an Advanced Placement (AP) program, and a dual enrollment program. Dual enrollment classes are offered to eligible juniors and seniors through L. E. Fletcher Technical Community College. The available AP courses are as follows: human geography, calculus, civics, and biology II. The school offers dual enrollment programs for English language and composition (English III), English literature and composition (English III), U.S. history, world history, and psychology.
In 2012, Assumption High School opened a freshman academy, which serves all freshman and houses the majority of freshman classes.
Le Stang & The Stampede serves as the school's newspaper. The school's official yearbook is The Roundup.
The Assumption High School mascot is the mustang. Assumption High has named its mascot "Sally" in keeping with the song "Mustang Sally".
Assumption High athletics competes in the LHSAA.
Sports sponsored by the school include:
Football championships