[header] How to be a school custodian [title] Apply for an opening at a school district. [step] Some school districts may always be accepting applications, some may begin accepting them as soon as a position becomes available. [substeps] Visit the central office location of the district to obtain an application if an online application is not available. 
Generally speaking, no special qualifications other than a high school diploma are required. However, previous commercial cleaning or maintenance experience may make you a more competitive candidate if jobs are scarce.