CRASH VICTIMS (Click photos for profiles) Greg Chan Kayla Rosenberg Melissa Leung Stephen Glidden  RELATED STORIES 05/04/01 Bus firms should supply maps Family, friends try to carry on 05/03/01 Final goodbyes to victims Itinerary described as sketchy Schools focus on stopovers Fourth victim is laid to rest 05/02/01 Overnight traveling questioned Newton says a 3d goodbye Bus driver keeping a low profile 05/01/01 Prayers urged for student, driver Newton school opens its heart Terror vivid for young survivor 04/30/01 First funeral a painful farewell WALKER: A life ended too soon School will stay open Driver had little prep time 04/29/01 A search for answers Suburban ideal shattered Oak Hill at heart of grief Fun, games before the crash Parents recall their children 04/28/01 Tragedy on school trip In a dark field, a terrible noise Victims loved music, life Bus windows scrutinized Sense of security shattered With travel comes worry At host school, disbelief No records of driving violation Response built on painful lesson Community of support Editorial: Tragic ride 04/27/01 Bus crash kills four students School dealing with tragedy Witnesses describe crash scene Bus passed inspection Canadian principal devastated Mother says vigilance needed  MAPS The bus route Area of the crash Accident recreation  PHOTO GALLERY Bus crash photos A picture of the Oak Hill Middle School band. (AP / WBZ-TV)  VIDEO 05/03/01 Glidden remembered Chan remembered Leung remembered Rosenberg remembered Newton mayor speaks 05/01/01 Bus was speeding Services held for Chan 04/30/01 Second funeral today 04/29/01 Newton mourns Funerals for victims today Investigation continues 04/27/01 Families arrive in Canada Community mourns deaths Parents react to the crash Newton reacts to the crash Scene of the accident Canada police speak on crash This video clip is viewed using RealPlayer. Get RealPlayer | Help This and other video can be viewed directly from http://www.necn.com  RELATED LINKS Newton Public Schools: www.newton.mec.edu Gaetz Brook Junior High www.gbjhs.ednet.ns.ca/ Saint John Regional Hospital: www.ahsc.health.nb.ca/ facregional.htm ABC Bus Companies, Inc. Co-developer of the bus, a Van Hool T2145 www.abc-bus.com

Two girls and two boys -- among 42 middle school students on a music trip from Newton, Mass. -- were killed, the Royal Canadian Mounted Police said.

Thirty-six others were hurt, most of whom were treated at a hospital for bumps and bruises and released, officials said. Three students and one adult remained hospitalized Friday, but their injuries were not life-threatening.

Many parents flew on charter flights to Nova Scotia to reunite with their children, who had gathered at a hospital in Saint John.

"It was relief for a lot of them when they came in," hospital spokeswoman Patricia Crowdis said. "Now, it's just testing, touching them, making sure they are all right, even though most of them knew their children were OK before they came. Now they are heading out. They just want to go home."

It wasn't immediately clear what made the bus go out of control, flip several times and skid to a halt on its side in Sussex, about 40 miles northeast of Saint John, investigators said.

Kevin Sheehan, General Manager for Crystal Transport Inc., the company that has a cooperative relationship with Kristine Travel and Tours, the company that owned the bus, said in a statement that the accident was an "enormous tragedy."

"It is our intention to cooperate fully with authorities as they proceed with their investigation into the circumstances surrounding the accident," Sheehan said.

Police said the bus appeared to have taken the wrong exit off the Trans-Canada Highway. The bus was en route to Halifax, six hours away, but instead exited toward Fredericton.

Weather did not appear to be a factor. Police do not yet know how fast the bus was going, and there was no indication that drugs or alcohol were involved, RCMP Staff Sgt. Dave Brown said.

In a statement faxed to the Associated Press Friday night,

The children, 10- to 13-year-olds from Oak Hill Middle School, were on their way to Gaetz Brook Junior High School outside Halifax to participate in a band concert and competition. They were accompanied by five adult chaperones and two bus drivers. The children were sleeping at the time of the accident.

Ruth Roach, who has a farm overlooking the scene, said she was awakened by a loud bang early Friday and assumed a truck had gone off the road. She said the exit ramp has a hair-pin turn.

"We're used to hearing this because this happens very frequently," Roach said. "Cars and transports come around that turn, and if they don't make it, they flip over."

Tigger Steeves, a truck driver who was on the scene moments after the accident said the children were in "bad shape, every one of them."

Bus windows were blown out, the cargo compartments thrown open and luggage and musical instruments strewn about the area.

"There was yelling and screaming going on," Steeves said.

The students killed were identified as Melissa Leung, 14; Greg Chan, 13; Kayla Rosenberg, 13; and Stephen Glidden, 12. Melissa's mother was a chaperone on the trip, Newton Mayor David Cohen said.

Counselors were called to both schools to help the students. The Newton school remained open Friday, though some parents arrived to take their children home.

"Everybody has just been crying today," said 13-year-old Randy Schwartz, an eighth-grader at the school. "Everybody is just hugging each other and telling each other it's OK. But it's really not OK."

Alex Chaloff, 12, said Steve and Kayla were his best friends.

"I feel really sad," he said. "It feels like it's just a dream and they'll be back in school on Monday. But they're not."

Seven accidents have occurred at the same exit ramp since 1991, Sgt. Brown said. The ramp itself is not considered particularly dangerous, but caution is necessary "anytime you have two major highways intercepting at a 90-degree angle," he said.

Police have interviewed the driver of the bus, Hin Kan, Brown said. Kan was treated and released for injuries, a spokeswoman for Saint John Regional Hospital said.

A February review of the bus, a 2000 model, showed no problems with the brakes or other mechanical functions, Massachusetts inspectors said.