Friends at the scene have identified the victim as a 16-year-old male who they say lived on the street directly behind the school. Authorities have not released his identity.
His body was found near the fence line along the back of the school's property.
The death has been ruled a suicide, and foul play does not appear to have been a factor.
VIDEO: JEFF EHLING GIVES NEW DETAILS ABOUT BODY FOUND
Body found on school campus
As the investigation continues, the school has been closed for the day.
At least one child arrived at the school already this morning and had to be turned away by school administrators. They were placed back inside their parents' vehicle, and they left the school.
There is crime scene tape up at the school, and this is a very active and ongoing investigation by Harris County Precinct 4 Constables.
Humble ISD alerted parents to what was happening with this message:
Oaks Elementary School will be CLOSED today. Classes and school activities are canceled for Thursday, March 9. The body of an unidentified adult male was found on the campus this morning in what appears to be a suicide. The campus is closed for police and authorities to complete their investigation of this tragic situation.An update will be provided to parents later this afternoon.