The drama occurred on Monday morning at the lycée Pasteur in Neuilly-sur-Seine (92).
Around 9: 00, a student, aged 15 years, had a fall of fifteen feet in the establishment.
The victim was found lifeless at the bottom of the stairwell.
The rescue, arrived on the scene, tried in vain to resuscitate the victim but they could only confirm his death.
The police rejects the thesis criminal, and considers that an accident or a suicide. An investigation is underway.