Israeli forces surrounded the Tareq Ben Ziyad Secondary School for boys in Al-Khalil (Hebron)'s city center on Thursday morning, then entered the building deploying sound grenades, witnesses said.
School was in progress when the soldiers arrived at approximately 10 a.m., entering the school and classrooms.
No detentions were reported, and troops withdrew to an area outside of the school, which is in the Israeli-controlled zone of the city.
An Israeli military spokeswoman claimed soldiers had been targeted by rock throwers from the vicinity of the school, and "went into the school to check," adding that no students were questioned or detained.
Observers from the Temporary International Presence in Al-Khali and parents of the schoolboys witnessed the incident, and entered the school after the soldiers, demanding that they leave.
A teacher at the school said his students were terrified when the soldiers entered the classroom, and added that soldiers had not made clear the reason they were in the building.