Emotions running high for the families of all three students directly involved in the first homicide inside a New York City public school in 20 years.

Bronx Supreme Court Justice Michael Gross finding Abel Cedeno guilty of manslaughter, Assault and Criminal Possession of a Weapon.

Cedeno wiping away tears at the verdict, members of the victim's family hugging each other.

"God be the glory, because if it wasn't for him I would have never gotten victory or justice for my son," said Luna Dennis the mother of the victim outside of the courthouse.

Cedeno fatally stabbed 15-year-old Matthew McCree and gravely wounded a 16-year-old in a fight during a History class at the Urban Assembly School for Wildlife Conservation in September 2017.

Cedeno said he feared for his life when one of the students approached him and acted in self-defense after years of being bullied because he is gay.

But students testifying for the prosecution said Cedeno started the fight after an object was thrown in his direction, and that he drew a knife.

"The attempts to smear the late Matthew McCree as a bully, as a member of a gang, his verdict speaks loudly to that smear attempt and the attempt to dirty up a victim," said Sanford Rubenstein, Attorney for Matthew McCree.

Cedeno had waived his right to a jury trial, putting the decision in the judge's hands.

After the verdict, Cedeno's bail was revoked and he asked to be placed in LGBTQ friendly accommodations at Rikers Island.

His lawyers said they will ask that he will be treated as a youthful offender at sentencing.

"The only thing this really does for me is I can mourn him, the way I really need to mourn him," added Dennis.

But this does not end the legal proceedings for McCree's family and the family of the student who survived the stabbing. They have filed civil lawsuits against the city's Department of education.

"No one is celebrating today, no one is popping champagne. This is a tragedy for three families one family will never again see their son, one family has a son that is permanently disabled and one family will see their son in jail. The Department of Education has a responsibility to the children of this city," said Rubenstein.

Sentencing for Cedeno has been scheduled for September 10th where he faces up to 25 years behind bars.