Immaculata High School was a private, Roman Catholic high school in Leavenworth, Kansas, United States.

Immaculata High School officially closed its doors on June 2, 2017, due to continuing enrollment problems and rising tuition costs.

[3] The Raiders competed in the Northeast Kansas League and were classified as a 1A school, the smallest classification in Kansas according to the Kansas State High School Activities Association.

Immaculata High School was a member of the Kansas State High School Activities Association and participated in the Northeast Kansas League.

Immaculata High School offered a variety of clubs/organizations for the students.