SWAMPSCOTT – Swampscott will be a leaderless school district no more.Superintendent Lynne Celli announced in a statement Friday that she hired Lowell High School Headmaster Edward Rozmiarek to be principal of Swampscott High School. He will start in Swampscott on July 1.Celli’s announcement comes about a week after the School Committee extended an offer to Garry Murphy for the position of interim superintendent. Search committee co-chair Rick Kraft confirmed Friday that Murphy had accepted the position, and that the School Committee hoped to have completed the details of his contract by their meeting on Wednesday, May 8.Rozmiarek, a resident of Beverly, previously worked as assistant principal at North Reading High School before taking the job in Lowell. In a meeting with parents and community members during his visit to Swampscott on Thursday, Rozmiarek said he hoped to return to a smaller community like that of North Reading.”Swampscott is my ideal kind of school,” said Rozmiarek. “It’s the size a public high school should be.”Rozmiarek was chosen from a pool of 39 candidates narrowed down through Celli’s search committee after current Principal Layne Millington accepted a position as principal of Marblehead High School earlier this year.Rozmiarek was one of three finalists who visited Swampscott and the high school this week, the other two candidates being John Dillon, assistant principal at Minuteman Regional Vocational Technical High School in Lexington, and Andrew Wulf, administrator of teaching and learning at Salem High School.Kait Taylor can be reached at [email protected].