When the assessor shall have completed the assessment, valuation, and equalization work in his county as provided by law, he shall notify each member of the board of equalization, if such board is not required by law to serve full time, and such board shall meet on the second Monday in February or at such other date prior thereto as may be made possible by the completion of the work of the tax assessor and sit at the courthouse of the county, from day to day, until its duties are completed or its allotted number of days exhausted, and shall review, revise, correct, and fix the assessment values made by the tax assessor by raising or lowering the assessment of any person, partnership, corporation, or association, except such assessments as have been approved by the Department of Revenue, as to any or all of the items of his assessment, in such manner as to secure the assessment of property at the amount specified by law on its fair and reasonable market value. The majority of a board of equalization shall govern in fixing the value for assessment of all property before it for termination.