This is a group photo of students at Danforth High School, Danforth, Maine, taken June 6, 1916.
The students themselves are not identified, but handwriting on reverse, shown below, mentions the name "Angie Lee, D. H. S., D. Me." in pen. Fainter, in pencil: "Angie Lee, Danforth, Maine, June 6, 1916". Unfortunately, there is no indication of Angie's placement in the photograph.
According to brief online research, which needs to be expanded: Angie Lee, born about 1900, was the daughter of H. Stewart and Mary Mabel (Lee) Lee. From what I've been able to gather, her parents shared a set of great grandparents: Daniel and Martha (Ash) Lee of Washington County, Maine and Charlotte County, New Brunswick, Canada.
If you have more information on Angie Lee and the students of her era at Danforth High School, please leave a comment or contact me directly.