| Roncalli High School | |
| Streetaddress: | 2000 Mirro Drive |
| City: | Manitowoc |
| State: | Wisconsin |
| County: | (Manitowoc County) |
| Zipcode: | 54220 |
| Country: | USA |
| Religion: | Roman Catholic |
| Oversight: | Diocese of Green Bay |
| President: | John Stelzer |
| Principal: | Fran Peter |
| Gender: | Coeducational |
| Type: | Private, Coeducational |
| Tuition: | $5,700 |
| Grades: | 9–12 |
| Campus Size: | 15 Acres |
| Campus Type: | closed |
| Athletics: | Cross country (boys), track and field, golf, tennis, basketball, volleyball, swimming |
| Conference: | Eastern Wisconsin |
| Song: | Roncalli Fight Song |
| Motto: | The mission of Roncalli High School is to educate in the Catholic traditions of spiritual growth, life-long service, and academic excellence. |
| Accreditation: | AdvancED[1] |
| Rival: | Valders Vikings, Two Rivers Purple Raiders |
| Mascot: | Jets |
| Team Name: | Jets |
| Yearbook: | The Pilot |
| Established: | 1965 |
| Enrollment: | 450 |
| Free Label3: | Athletic Director |
| Free Text3: | Nathan Kaderabek |
Roncalli High School is a private, Catholic high school located in Manitowoc, Wisconsin, USA. It is owned by the Diocese of Green Bay. Founded in 1965 by the De La Salle Christian Brothers,[2] Roncalli High School is named for Pope John XXIII (né Angelo Roncalli). Roncalli offers a college-prep curriculum. In 2022, the school merged with the Catholic elementary and middle schools, becoming known as Roncalli Catholic Schools.
The school's mascot is the Jets. A Fine Arts Center for the visual and performing arts is the newest addition. The Zimmer Auditorium hosts four dramatic productions and six instrumental and choral concerts each year.
Roncalli's educational values are inspired by St. John Baptist de La Salle, St. Francis Of Assisi, St. Edith Stein, and Pope John XXIII.[3]
The school offers AP classes, including AP chemistry, AP physics, AP human biology, AP U.S. history and AP calculus.