The school is named after the longest serving Chief Justice in Supreme Court history, John Marshall.
In April, the city council declared a portion of Soldiers Field no longer needed for park purposes.
Mayor Claude H. "Boney" McQuillan, a former pro boxer and Green Bay Packers player, opposed the location and vetoed the resolution.
The council overrode the veto only to be countered by the mayor's refusal to sign a deed to transfer the land title.
After years of discussion, major renovations began to expand the institution's space and upgrade its facilities in the summer of 2005.
JM has a variety of Advanced Placement, honors-level classes, and post-secondary enrollment options available to its students.