A member of the Prince William County School Board resigned suddenly Wednesday, four months after beginning his third term.

Grant Lattin, who represented the Occoquan district, sent his resignation notice to Chairman Milton C. Johns but did not notify the rest of the School Board, said board member Betty Covington in an e-mail.

“I am sorry to see him go,” Covington said. “He is a very nice man.”

Lattin, a father of nine, said in a telephone interview that having a full-time work load in the District overseeing U.S. Navy lawyers and then rushing home to deal with School Board activities came “at the expense of my family.”

After almost nine years on the board, Lattin said, it was “time to adjust my priorities and spend some more time with my family.”

“We’ve kept the cost of public education at a manageable rate while at the same time providing a high-quality education,” Lattin said of his tenure. At the same time, he said, the school system’s budget situation is troublesome, and more funds are needed.

“We’re spending less per child than any other school system in Northern Virginia,” Lattin said.

After formally accepting the resignation, the board will make an announcement about how it will go about filling Lattin’s seat, said school system spokeswoman Irene Cromer.

Lattin saw the school system from a “parent’s perspective,” according to his official biography on the system’s Web site. His youngest child attends Woodbridge High School, which five of his other also children attended.

Lattin taught fifth grade at Antietam Elementary School from 1998 to 2001.

He served more than 20 years in the U.S. Marine Corps, achieving the rank of lieutenant colonel before his retirement in 1995. He was awarded the Navy and Marine Corps Medal and the Meritorious Service Medal.

Since March 2008, Lattin has served as acting director of the Navy’s general litigation division, supervising attorneys involved in civil litigation across the country.

Juggling those responsibilities and family obligations became too much, Lattin said, and he needed to “adjust” his priorities after nearly a decade.

“I’ve enjoyed the ride,” he said.