The lineup of administrators in the Stoughton Public Schools has been dramatically altered in the past few months, and among the changes is the new principal at Stoughton High. Principal Juliette Miller and assistant principals Hope Fernandes and Michael O’Neil will meet the public on Wednesday from 6 to 8 p.m. in the high school’s media center. Miller, a Stoughton High graduate and a former director of mathematics at the school, was selected by Superintendent Marguerite Rizzi from a field of 40 applicants in March. “She brings intelligence, poise, experience, and commitment to this job along with a deeply sound decision-making process,” said Rizzi at the time of the selection. Miller held administrative positions at both King Philip Regional in Wrentham and Apponequet Regional in Lakeville, where she was assistant principal. Matthew Colantonio left his position as Stoughton High principal to replace the retiring Wayne Hester as principal of O’Donnell Middle School.