By Ava-joye Burnett

HEREFORD, Md. (WJZ) — Frightening moments in Baltimore County as a bus packed with dozens of students rolls over, sending several to the hospital. One person is in critical condition.

Ava-joye Burnett has more on the injuries.

The victim in critical condition at Sinai Hospital is the school bus driver. Nine students were also hurt, but there’s gratitude that everyone made it out alive.

Terrifying moments in Baltimore County: a school bus carrying 42 students and the driver rolled over on York Road near Bunker Hill Road.

“I got kind of blacked out for a second,” student Nick Dowell said. “Then when I opened my eyes again, we were on the ground, the bus was tilted over and I just saw everyone in shock.”

The bus driver was in the worst shape. Baltimore County Public Schools say she is in critical condition, but still talking and responsive..

Sky Eye Chopper 13 was over the scene, where Hereford high and middle schoolers were shaken up after the crash.

“I look ahead and see the bus is swerving, and I just close my eyes. And I open my eyes, and the bus is on its side,” another student said.

Once students were transported back to the high school to their parents, the hugs were a little bit tighter.

“I was a little startled, obviously, a little scared. You just kind of go into mom-mode,” said parent Brooke Riegel.”

WATCH: Shocked Students Recount Baltimore Co. School Bus Crash

The school bus crashed into a guardrail and snapped a pole, shutting down a stretch of York Road for hours.

Nine of the students were transported to the hospital with minor injuries.

The school buses have no seatbelts–a design that Baltimore County Firefighter Lt. Paul Massarelli says works.

“That allows them to be kind of compartmentalized in the bus, so they don’t have a lot of room to bounce around in an accident,” he said.

Baltimore County police are still investigating. They have not said what caused the school bus full of students to crash.

The school system says it will have personnel on hand Thursday to help students who may need counseling.

Follow @CBSBaltimore on Twitter and like WJZ-TV | CBS Baltimore on Facebook

Ava-joye Burnett