MARYSVILLE, Wash. — Among the balloons and flowers tied to the chain-link fence outside Marysville-Pilchuck High School are these: a white wrestling shoe; a youth football team photo, with one player encased in a red-marker heart; and a candle covered with a plastic cup bearing the name “Jaylen.”

They are all tributes to Jaylen Fryberg, the popular 15-year-old freshman who texted five friends to invite them to lunch Friday and then gunned them down at a table in the school’s cafeteria.

Two girls died in the attack, and three other students — including two of Fryberg’s cousins — were gravely wounded. Fryberg died after shooting himself.