Colby R. White (Prince George’s County schools)

Eighteen years ago, Colby R. White was an accounting clerk for Maryland’s second-largest school system.

Today, he is the Prince George’s County school district’s chief financial officer, responsible for a staff of 175 employees and for helping craft the school system’s $1.8 billion budget. His office includes payroll, purchasing and worker’s compensation.

White replaces Thomas Sheeran, who had served in an acting capacity since 2012. Sheeran recently resigned, according to Max Pugh, a spokesman for the school system.

White’s appointment is part of a personnel shake-up that has been evolving since Kevin M. Maxwell was brought on as the schools chief executive officer a year ago.

Maxwell has created dozens of new positions and removed many members of the executive cabinet who were serving in acting capacities since former school superintendent William R. Hite took the top job in Philadelphia in 2012.

White most recently served as the district’s acting budget director.

According to a partial biography provided by the school system, White has also worked in the county schools as a budget technician, a budget analyst, a supervising budget analyst and a data warehouse officer. Prior to coming to the school system, he worked Cellular One and Hechinger’s, Pugh said.

A graduate of Prince George’s County public schools, he received three degrees from Bowie State University. He holds a bachelor’s degree in business administration with a concentration in accounting; a master’s degree in Management Information Systems and a doctorate of education in Educational Leadership.