With mail-in ballots and all of the precincts reported, Aisha Knowles won the race for an open seat on the Alameda County Board of Education.

Knowles held off her opponent, Geraldine Sonobe, 52 percent to 47 percent.

Knowles, 35, is a public information officer for the Alameda County Fire Department. Sonobe, 63, is a former Oakland high schoolteacher and an executive for College Track, an educational nonprofit that prepares low-income high school students for college.

Knowles will represent Area 4, which includes San Leandro, San Lorenzo, Ashland, Castro Valley, Fairview and Cherryland. This was the only competitive race on the county board, which oversees the Alameda County Office of Education. The county agency, based in Hayward, provides teacher training and fiscal oversight to local school districts. It also operates programs for high-risk youths.

Read Katy Murphy's Oakland schools blog at www.IBAbuzz.com/education. Follow her at Twitter.com/katymurphy.