Hattiesburg, Lamar County and Wayne County districts sought permission to teach students for fewer than 180 days this year, the minimum required by state law.
The Hattiesburg district was closed for three school days after the storms, while the Lamar County district was closed for two and the Wayne County district for one.
Hattiesburg and Lamar County each made up one day by holding classes on Presidents Day, Feb. 18. They asked to have the remaining time waived. Wayne County hasn't made up its missed day.
The board agreed to waive an extra day that Lamar County's Oak Grove High School was closed.