| Waterloo High School | |
| Mascot: | Cougar |
| Type: | Public high school |
| Ceeb: | 012805 |
| Principal: | Gary Dan Williams (2016-2017) |
| Faculty: | 21.50 (on FTE basis)[1] |
| Ratio: | 16.23 |
| Grades: | PK-12 |
| Enrollment: | 349 (2017-18)[2] |
| Streetaddress: | 311 School House Lane |
| City: | Waterloo, Alabama |
| Zipcode: | 35677 |
| Coordinates: | 34.9186°N -88.0645°W |
| Pushpin Map: | Alabama#USA |
| Country: | United States |
| District: | Lauderdale County Schools |
| Colors: | Green and white |
Waterloo High School is a high school in Waterloo, Alabama in Lauderdale County, Alabama. The high school is a public school in the Lauderdale County School System under the Alabama State Board of Education. The high school has grades Kindergarten - Twelfth grade in one building. It has about 250-350 students in a school year. The current building was constructed in 1986.
The school has six sports: Baseball, softball, cross country, volleyball, basketball, and football. They compete in the Alabama High School Athletic Association division 1A. The mascot is the Cougar. Previous mascots include the Stripes (for Striped Bass) and the Bulldog.
The school has won state titles in the following sports:
1990
2003, 2005, 2006
1993, 1994, 1995, 1997, 2001
1990