Mary Help of Christians Academy is an all-girls, Roman Catholic high school in North Haledon, in Passaic County, in the U.S. state of New Jersey, serving students in eighth through twelfth grades.

It is situated on a 16.33-acre (6.61 ha) tract of land that was known as the Muhs Estate on Belmont Avenue in North Haledon.

In 1921, the Muhs Estate was sold by its owner to the Salesian Sisters of St. John Bosco of the Eastern Province, and in 1924, Mary Help of Christians Academy opened its doors.

[9][10][11] Prior to the realignment that took effect in the fall of 2010, MHCA spent one year as a member of the smaller Bergen County Scholastic League (BCSL).

[13] Sports offered at Mary Help include basketball, bowling, cheerleading, dance team, soccer, softball, tennis and volleyball.