BRUNSWICK — One of Bowdoin College’s top administrators is stepping down.

Bill Torrey, senior vice president for planning and development, will leave his post in June – the end of the current academic year.

Bowdoin’s President, Barry Mills, made the announcement today in a letter to the college community.

Since being named chief development officer 20 years ago, Torrey and his staff have secured more than $600 million in contributions. Mills said Torrey assembled one of the finest development teams at any college or university in the United States.

“That is a remarkable number, given the size and history of Bowdoin, and it has quite simply transformed this college,” Mills wrote. “When historians look back on this period of the College, there will be an extensive chapter or two devoted to Bill and his transformational work.”

Mills said Torrey has agreed to remain with the Brunswick-based liberal arts college for an additional year as secretary of the College while he comtemplates his next career move.