STATEN ISLAND, N.Y. -- A principal's decision to bar a senior from walking at her Curtis High School graduation has led to plans for a protest of the ceremony -- and buzz on Facebook, where more than 200 people say they plan to attend the demonstration.

Danielle Coates, 17, of New Brighton, has grades in the 90s and great attendance -- but Principal Dr. Aurelia Curtis said she won't be crossing the stage at Friday's graduation because she forged paperwork to bring a date to her prom. The date, another Curtis student, had been barred from prom due to poor attendance.

But Danielle said it was her date who forged the paperwork -- unbeknownst to her -- that she turned into school officials.

"I was completely clueless when they brought me out of class just to tell me I was barred from graduation," Danielle said today.

She said her date even confessed to the forgery to an assistant principal, but that didn't change matters.

"They still wouldn't want to listen to reason," she said. "That's just not right."

But Dr. Curtis said the girl submitted forged paperwork, saying her date went to another school when he really attended Curtis. That meant his attendance wasn't checked before he was granted a ticket and allowed to attend prom.

She said it is Danielle's handwriting on the forms, and that her date would not have had access to prom permission slips because he wasn't eligible to attend.

"When I saw the extent to which they went to circumvent school rules, and to forge documents, I barred her from walking at graduation," she said.

But now Danielle is planning a protest, with the backing of rapper and activist NYOil, whose youth mentoring group Danielle is part of.

The protest is planned for the time of the graduation ceremony, 4 p.m. on Friday, outside the Curtis High School Field.

Here's a video uploaded to SILive.com by user Nyoil_theideal, representing Miss Coates' side of the story