Almost $300,000 has been raised to send a New York bus monitor, who was verbally assaulted by children, on a holiday.
The attack has generated international outrage and an outpouring of support for the victim, who has told police she does not want the boys to face criminal charges.
The publicity over 68-year-old Karen Klein's case - an adult apparently being bullied by youths - adds a twist to a recent surge in awareness that has brought the issue of bullying in the US from the classroom to the stage and screen to the White House.
Klein told police she is happy with the swift and strong community response against the verbal attack, which was captured in a 10-minute video, authorities said at a news conference on Thursday (local time).
Criminally charging the boys, all seventh-graders, would require their conduct to rise to the level of a crime, Greece Police Captain Steve Chatterton said. So far, it has not been found to reach that level.
The YouTube video had been viewed more than 1.5 million times by Thursday morning. An online crowd-funding site raised more than US$225,000 (NZ$285,000) by midday to help send Klein on holiday.
Klein said she hopes the boys' parents will view the viral video of the attack and talk to their children about being "a little more respectful." Parents of all four boys are cooperating fully and say their children will be punished, Chatterton said.
A student recorded the video. In it, Klein is seen trying her best to ignore a stream of profanity, insults and outright threats directed at her. At one point in the video, she breaks down in tears.
Klein told NBC's Today show that it took "a lot of willpower" not to respond to Monday's jeers from at the boys riding the bus.
"I'm not usually that calm. Just ask my kids," Klein, a grandmother of eight, said during the interview. "I'm sure they don't act that way at home, but you never know what they're going to do when they're out of the house."
Klein said she is "amazed" at the support she has received.
"I've got these nice letters, emails, Facebook messages," she said. "It's like, wow, there's a whole world out there that I didn't know. It's really awesome."
This year, the White House held a conference on bullying prevention, estimating that it affects 13 million students, or about a third of those attending school. President Barack Obama said he hoped to "dispel the myth that bullying is just a harmless rite of passage or an inevitable part of growing up. It's not."
In September, after 14-year-old Jamey Rodemeyer, not far from Rochester in suburban Buffalo, killed himself after complaining about being bullied about his sexuality, pop singer Lady Gaga decried the loss of another life to bullying, tweeting to millions of followers that she'd take her concerns to Obama.
In April, the documentary film Bully examined the problem by following five kids over the course of a school year.
In Klein's case, she didn't report the bullying, but school officials notified police when they learned of it. The school may take disciplinary action. A school district bullying-and-violence-prevention response team is investigating.
Other videos of the verbal assault have also been posted.