105 ILCS 112/10
For the purposes of this Act, unless the context otherwise requires:
"Student" means a pupil at a public or private elementary or secondary school in Illinois.
"Teacher" means a person who is teaching at a public or private elementary or secondary school in Illinois, regardless of whether that teaching is on a full-time or part-time, temporary or permanent, or regular or substitute basis.
"Dissection" includes cutting, killing, preserving, or mounting of living or dead animals or animal parts for scientific study; but does not include the cutting, preserving, or mounting of (1) meat or other animal products that have been processed for use as food or in the preparation of food or (2) wool, silk, glue, or other commercial or artistic products derived from animals.
105 ILCS 112/10