Photo Fragment - Probably St. Lawrence Catholic School

This undated and unidentified photo fragment seems to be of a school group, probably at St. Lawrence Catholic School in Muncie, Indiana.  The girls seem to be holding flowers and diplomas, so it may be a school graduation picture.  In the lower center, you can see a partial picture of a nun; my mother thinks that might be Sr. Anne Marie (aka Dorothy Licher).  However, the students' clothing suggests 1920 or before and Sr. Anne Marie did not join the convent until about 1929.  Neither my mother or I recognize any of the people in the photo, but Mom is pretty confident the building is St. Lawrence School.

If you recognize anyone, please let me know.