Words are inadequate to describe the building.  It is well worth a visit.  There are many good camera angles and great details to be seen close up. 
The building is at the intersection of Milwaukee and Addison.  If you take the Kennedy Expressway (Route I-90), exit at Addison and travel west--you can't miss it.  I was told by a friend recently that the building with its shining clay tile roof can be recognized unmistakably from airplanes flying over Chicago. 
Note: On weekends the gates around the building are usually locked, but I have often found the gates open and exterior accessible close up, on summer weekday afternoons.

At 3601 N. Milwaukee Avenue on Chicago's north side stands what is arguably one of the greatest, large "Prairie School" structures and one of the grandest public school buildings in the Chicago area.
This school building project was commissioned by a school board headed by Jane Adams in 1908 and was designed by Architect, Dwight Perkins.  Construction on the original building was completed in 1910.
Two large wings were added in 1915 (by Architect Arthur F. Hussander) and another addition in 1924 (John C. Christensen, Architect).  All the additions perfectly match the original structure and greatly enhance it.