Mount Alvernia High School was established in 1935 as an extension of Mount Alvernia Academy, an elementary school established in 1927 located in nearby Chestnut Hill.
The establishment of Mount Alvernia High School was made possible by the growth of Mount Alvernia Academy, which began as an elementary school in 1927 located nearby Chestnut Hill. This ultimately led to the founding of the high school in 1935.