SUNRISE, Fla. (AP) — The Latest on School Shooting-Florida-Graduation (all times local):

4:15 p.m.

Tonight Show host Jimmy Fallon was the surprise commencement speaker at the Florida high school where 17 people were killed in a shooting rampage.

According to social media posts, Fallon told the 784 members of the Marjory Stoneman Douglas High class of 2018 to persevere in the face of difficulty and thanked them for their bravery and activism.

The ceremony Sunday honored four seniors slain in the Feb. 14 attack.

Diplomas are being presented to the families of Nicholas Dworet, Joaquin Oliver, Meadow Pollack and Carmen Schentrup.

Charged in the shooting is 19-year-old Nikolas Cruz. His attorneys have said he will plead guilty in exchange for a sentence of life without parole. Prosecutors are seeking the death penalty.

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9 a.m.

The senior class from the Florida high school where 17 people died in February's gun massacre is set to graduate Sunday afternoon, with plans to honor four members slain in the attack.

Marjory Stoneman Douglas High will present diplomas to the families of Nicholas Dworet, Joaquin Oliver, Meadow Pollack and Carmen Schentrup.

The ceremony for the 784 members of the Class of 2018 will be held at the BB&T Center, where the National Hockey League's Florida Panthers play. It was moved to the arena to accommodate the expected large crowd.

The Broward School District is keeping the event private. Only invited guests will be admitted and the media has been barred from inside the arena.

Fourteen students and three staff members died in the Feb. 14 attack. A former Stoneman Douglas student, 19-year-old Nikolas Cruz, is charged with their deaths and the wounding of 17. His attorneys have said he will plead guilty in exchange for a sentence of life without parole. Prosecutors are seeking the death penalty.

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This story corrects 4:15 p.m. item to say class of 2018 had 784 members, not 748.