W. Va. Code § 11-8-6f
(a) Notwithstanding any other provision of law, where any annual appraisal, triennial appraisal or general valuation of property would produce a statewide aggregate assessment that would cause an increase of two percent or more in the total property tax revenues that would be realized were the then current regular levy rates of the county boards of education to be imposed, the rate of levy for county boards of education shall be reduced uniformly statewide and proportionately for all classes of property for the forthcoming tax year so as to cause the rate of levy to produce no more than one hundred two percent of the previous year's projected statewide aggregate property tax revenues from extending the county board of education levy rate, unless subsection (b) of this section is complied with. The reduced rates of levy shall be calculated in the following manner:
(4) divide the total regular levy tax revenues, thus increased in subdivision (3) of this subsection, by the total weighted net assessed value as calculated in subdivision (2) of this subsection and multiply the resulting product by one hundred; the resulting number is the Class I regular levy rate, stated as cents-per-one hundred dollars of assessed value; and (5) the Class II rate is two times the Class I rate; Classes III and IV, four times the Class I rate as calculated in the preceding subdivision.
An additional appraisal or valuation due to new construction or improvements, including beginning recovery of natural resources, to existing real property or newly acquired personal property shall not be an annual appraisal or general valuation within the meaning of this section, nor shall the assessed value of the improvements be included in calculating the new tax levy for purposes of this section. Special levies shall not be included in any calculations under this section.
(d) Growth County School Facilities Act. -– Legislative findings. -–
The Legislature finds and declares that there has been, overall, a statewide decline in enrollment in the public schools of this state; due to this decline, most public schools have ample space for students, teachers and administrators; however, some counties of this state have experienced significant increases in enrollment due to significant growth in those counties; that those counties experiencing significant increases do not have adequate facilities to accommodate students, teachers and administrators. Therefore, the Legislature finds that county boards of education in those high-growth counties should have the authority to designate revenues generated from the application of the regular school board levy due to new construction or improvements placed in a Growth County School Facilities Act Fund be used for school facilities in those counties to promote the best interests of this state's students.