OAKLAND (KPIX 5) — A graduation ceremony for Dewey Academy in Oakland’s Class of 2018 was held on Wednesday evening, but was missing one student: Nia Wilson.

Sitting in Nia Wilson’s seat were a photo, flowers and a mortar board.

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Wilson’s throat was slashed on the MacArthur BART platform as she and her sisters exited a train on July 22nd allegedly by John Cowell, who has a Thursday court appearance for charges related to the fatal attack.

The graduation ceremony was filled with references to Wilson, including a video and speeches. Perhaps the most heartwarming moment was when her mother and father stepped on stage to accept their daughter’s diploma.

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Nia Wilson’s parents smiled as they accepted their late daughter’s diploma. (CBS)

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“I’m very proud. This is an achievement that me and my daughter sat down and talked about several times. It’s so heartbreaking that she’s not here to experience this for herself,” Ansar Mohammed told KPIX 5.