The calendar, recommended by a committee of staff representatives, includes 87 days in the first semester.
That way the semester ends before Christmas break, said David Gwinn, a member of the committee.
Students return from the winter break on Jan. 4, 2008. Spring break will be March 24-28. May 20 will be the last day of school, with 93 days in the second semester.
Gwinn said the week of spring break was chosen by a staff vote.
Superintendent Jim Scott said they try to protect the testing window around state exams in May.
"I'm not sure we can keep giving up a day prior to testing," Scott said.
"We're giving up more and more days in the year. That just means you go later," Scott said. "We can't give up another day - prior to testing - every year when we create a school calendar."
The board had already approved the start date, Scott said.
School board member David Kindle made a motion they approve the calendar, with the stipulation that students return on Jan. 3 rather than the committee's recommendation of Jan. 4.
School begins Aug. 15 with Sept. 3 off for Labor Day and Nov. 6 off for Election Day. Thanksgiving break is Nov. 21-23. The first semester ends Dec. 20. Students have March 21 off for Good Friday.
Shortly after approving the calendar, District 2 school board member Glenn McMurray resigned his position on the board.
McMurray said he plans to file as a candidate for sheriff.
McMurray said he wanted to resign from the school board in order to "preserve the integrity of the position."
School board positions are nonpartisan. McMurray said he felt a party affiliation in order to run for sheriff may present the wrong impression.
"I didn't want to intertwine the two (positions) together," he said.
McMurray is in the last year of his second term on the board. He has served for seven years and three months.
All the school board positions are up for election this year.
Since it is an election year, the court does not have to be petitioned for a special election. The board can fill the position, said school board President Virgil Sampson.