Arlington School Board member Sally Baird will not seek a third term in office this year.

Baird tells the Sun Gazette that she’s stepping down because she wants to spend more time with her family. Three candidates — Barbara Kanninen, Nancy Van Doren and Greg Greeley — have already filed paperwork to run for Baird’s seat, the paper also reported.

Kanninen last year challenged incumbent James Lander in the Democratic School Board endorsement caucus. She was narrowly defeated.

Greeley, 49, announced his candidacy today and said he will focus on the school system’s capacity challenges.

“Our growing school system is at a critical juncture,” Greeley said. “Our School Board needs a leader with the community, professional, and schools experience to meet these challenges head-on. I am prepared to lead the important school and community dialogue that will shape Arlington schools’ growth and will ensure that our decisions are driven by what is best for students.”

Greeley, a single foster parent who lives in the Douglas Park neighborhood, previously served as chair of the Planning and Capacity Subcommittee of the Advisory Council on School Facilities and Capital Programs.