On or before the first day of December of each fiscal year, the Director of General Services shall determine for each grade level and certify to the Controller the eligible bonded debt service for the district, as follows:
(a)
He or she shall determine the amount of the bonded indebtedness that was incurred by the district for each grade level, when bonds were issued and sold for purposes of more than one grade level. When one or more additional apportionments have been made to a grade level of a
district, conditioned upon the issuance and sale of additional bonds of the district, the Director of General Services shall determine and include in the eligible bonded debt service and in his or her certificate the amount raised and to be raised by the district during the current fiscal year for the payment of principal and interest on that portion of the additional bonded indebtedness of the district that was incurred for each grade level as a condition to receiving the additional apportionment.
(b)
If the Director of General Services determines in any fiscal year that the amount certified to the Controller as the eligible bonded debt service during the last preceding fiscal year is more than the amount actually raised by the district for the repayment of principal and interest of the bonded indebtedness referred to in subdivision (d) of Section 15729 and subdivision (a) of this section, then the Director of General Services shall subtract
from the amount determined as the eligible bonded debt service for the current fiscal year an amount equal to the difference between the amount actually raised by the district during the preceding fiscal year for the repayment of the bonded indebtedness and the amount so certified by the Director of General Services.
(c)
If the Director of General Services determines in any fiscal year that the amount certified to the Controller as the eligible bonded debt service during the last preceding fiscal year is less than the amount actually raised by the district for the repayment of principal and interest of the bonded indebtedness referred to in subdivision (d) of Section 15729 and subdivision (a) of this section, then the Director of General Services shall add to the amount determined as the eligible bonded debt service for the current fiscal year an amount equal to the difference between the amount actually raised by the district during the
preceding fiscal year for the repayment of the bonded indebtedness and the amount so certified by the Director of General Services.