The Dakota Valley Board of Education approved a $472,199 bid for a middle school boiler upgrade, finalized multiple staff hires and resignations, and advanced several policy and handbook revisions during its Aug. 11 regular meeting.Chairperson Steve Kistner called the meeting to order at 6 p.m. in the district board room. Members Jesica Hanson, Steve Kistner, Andrew Nilges and Emily Norby were…