The auditors herein provided to audit the finances of school districts of the second, third and fourth class, shall carefully inspect every school order issued for the payment of money by the board of school directors, and the accounts of each official or person whose accounts are to be audited in the district for which they are acting as auditors during the period of time covered by their audit. Any school order issued in any other manner or for any other purpose than herein authorized shall, if paid, be disallowed by the auditors, and charged against the person or persons voting for or approving the same. All such orders disallowed shall be set forth in the report to be made by the several auditors as herein provided, together with such other sum or sums as should be properly charged against any person or persons. Such auditors shall also examine, and report to the proper boards of school directors upon, the sufficiency and the security of the bonds of the officers, employes, and appointees of the boards of school directors and of the school depositories.¹