The Marjory Stoneman Douglas track and field coach and history teacher appeared on NBC's American Ninja Warrior to represent MSD.
The Miami episode featured several students and teachers from Stoneman Douglas who cheered Stewart on from the crowd.
"We are showing that we are MSD Strong. It proves we still strive for greatness" he shared after he competed.
The show paid tribute to the victims and survivors of the shooting that took place on February 14th at the school in Parkland.