Rick Bryan has been granted a sabbatical for his last months as head of Nichols School, with Mary Rech Rockwell, director of studies, taking over as interim head of school, Nichols announced Monday.

In January 2012, Bryan notified the school’s board of his plans to retire at the end of this school year. In September, Bill Clough was named to succeed Bryan, effective July 1. Clough is associate head of school at Berkshire School in Sheffield, Mass., and, according to Nichols, is already involved in the transition to his new school.

A press release from the school said, “Since the search [for a successor] went quickly and smoothly, [Bryan] said he looks forward to taking a break. He plans to attend all major school functions, including graduation and events in his honor.”

It was announced early this month that, upon his retirement, Bryan will become executive director of the Buffalo Independent Secondary School Network, of which Nichols is a member. Bryan has been at Nichols for 31 years, 19 of those years as head of school.

Nichols is a private coeducation school in Buffalo for students in grades 5-12.