1.  Minimum assessment ratios.  A 50% minimum assessment ratio by 1977; a 60% minimum assessment ratio by 1978; and a 70% minimum assessment ratio by 1979 and thereafter. Notwithstanding this subsection, a municipality should not have an assessment ratio at an amount greater than 110% of its just value;  

2.  Maximum rating of assessment.  A maximum rating of assessment quality of 30 by 1977; a maximum rating of assessment quality of 25 by 1978; a maximum rating of assessment quality of 20 by 1979 and thereafter;  

3.  Employment of assessor.  Any municipal assessing unit may employ a part-time, non-certified assessor or contract with a firm or organization that provides assessing services; when any municipal assessing unit or primary assessing area employs a full-time, professional assessor, this assessor must be certified by the bureau as a professionally trained assessor. The bureau shall publish, for the information of the municipalities, a list of assessing firms or organizations. The bureau shall provide to a municipality, on request by the municipality, a list of certified assessors.