The county treasurer shall:
(1) keep all school money in a separate fund and keep a separate account of its disbursement to the several school districts that are entitled to receive it, according to the apportionment of the county superintendent of schools;
(2) notify the county superintendent of the amount of the county school fund in the county treasury subject to apportionment, whenever required, and inform the superintendent of the amount of school money belonging to any other fund subject to apportionment, or as otherwise provided by law; and
(3) pay all warrants drawn on county or district school money, in accordance with the provisions of law, whenever the warrants are countersigned by the district clerk and properly endorsed by the holders.