105 ILCS 5/10-3

Any person who, on the date of his or her election, is a citizen of the United States, of the age of 18 years or over, is a resident of the State and of the territory of the district for at least one year immediately preceding his or her election, is a registered voter as provided in the general election law, is not a school trustee or a school treasurer, and is not a child sex offender as defined in Section 11-9.3 of the Criminal Code of 2012 shall be eligible to the office of school director.