Three incumbents won reelection to the School Committee in last week’s annual town election, while a contested Planning Board seat went to Elizabeth Grimes, who narrowly beat out Artie Crocker for the five-year position. Grimes received 1,225 votes to Crocker’s 1,116, according to results posted by the town clerk’s office. There was no incumbent in the race, with Richard Ruth opting against a reelection bid. School Committee incumbents Joseph Barnes, Constance Barr, and Marianne Cooley finished well ahead of David Ecsedy on Tuesday. Barnes was the top vote-getter with 1,737, Barr received 1,686 votes, and Cooley got 1,574, while Ecsedy received 633 votes. The election drew roughly 8 percent of the town’s registered voters.