In addition to Winnetka, the school draws from the surrounding communities of Glencoe, Northfield, Wilmette and Highland Park.

The school portion, in the same Gothic style adjoined the church on the east side, on Tower Road.

In 1918, during the Spanish Influenza, Fr Haarth noted "Something that never happened in the history of the Catholic Church in this State took place on the Sundays of the 7th and 14th of October [in 1918]: namely, the church was closed and no public services were held on account of influenza epidemic; the school was closed for three weeks at the same time.

[4] In 1957, Monsignor Hillenbrand orchestrated an exhibition of contemporary religious art at Sacred Heart School.

In 1963, Monsignor Hillenbrand hired the school's first African American faculty member, to teach sixth grade.

When the grade school of Immaculate Conception Parish in Highland Park was closed in 1978, its 60 students were bussed to Sacred Heart.

[5] Sacred Heart School follows the curriculum guidelines of the Archdiocese of Chicago and the Common Core State Standards Initiative and operates with a low teacher-to-student ratio.

Qualifying students who test in are able to attend advanced mathematics programs at Loyola Academy or New Trier High School.