KINGSTON (CBS) – A school bus and a car collided in Kingston early Friday morning, leaving two students critically injured and a total of five people hurt.

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WBZ NewsRadio 1030’s Mark Katic reports

It happened on Lake Street near Silver Lake High School just after 7 a.m.

Police say the school bus was empty as it left the campus and then was hit head-on by a BMW sedan that had crossed the yellow lines.

Three girls and a boy were in the car.  All are juniors at the high school.  Two are in critical condition and two are listed as serious.

Two of the students were rushed to hospitals in Boston on Med Flight rescue helicopters. A third was taken to Boston in an ambulance.  The fourth student and the bus driver were taken to local hospitals.

The bus driver was not injured but transported to the hospital as a precaution.

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There’s no official word yet on what caused the crash.  There were no skid marks at the scene.

The driver of the car, Monica Knight, was the only person conscious in the BMW when rescue workers reached it. The other three students were unconscious.

Students from Halifax, Kingston and Plympton attend the regional high school, which is held its junior prom Friday evening.

After much discussion, school officials decided the prom would go on as scheduled.

“We feel that it is important for our student body to be together in a safe environment during this difficult time,” Principal Richard Kelley said.

Kelley also noted that the senior class has extended an invitation to any student who purchased a ticket for the prom, but is too distraught to attend, to attend the senior prom.

Kelley’s statement also discussed the victims involved in the crash.

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“The students involved in the accident this morning are receiving the best medical care possible. We wish them the best and our thoughts and prayers are with them for a swift recovery,” he said.