These smiling people are the Bernards High (NJ) Yearbook Board in June 1921.   The students graduated with the class of 1922, so the committee was likely formed to produce the upcoming yearbook.  Their names are written on the back.

Bernardsville High School 1921
Taken June 1921.

The honorable Year Book Board
Reading from left to right

Standing:
Janet K. Craig, Editor in Chief
Mr. Ferry, Chief Monk [?]
Fred H. Field, President of Circulation
Arthur Monaco, President of Advertising Committee
Mr. Elmer Johnson, Head of Lit___
Alberta DeCoster

Sitting:
Annabell Eggling
Alice DeMond
Marion Prout
Sarah Dobbs

The best bunch in High School

See Catalog Record: https://somersethills.catalogaccess.com/photos/431