SUBSTITUTE CUSTODIANS needed at Fillmore Central Schools. Application available online at or from any school office. Send completed application to Heath Olstad, Principal, Fillmore Central Schools, PO Box 599, Harmony, MN 55939. Fillmore Central ISD #2198 is an Equal Opportunity Employer. We do not discriminate on the basis of race, religion, color, sex, age, national origin, or disability.