Along with the four seriously injured, a total of 27 passengers were taken to hospitals in Reims and Chalons to be treated for injuries.
The school group from Alvechurch Middle School, Worcestershire, were travelling with school travel specialist Interski. As well as the teachers and pupils on board the coach, there were six Interski ski instructors.
The driver is due before a French court later today. Police suspect he either fell asleep at the wheel or was taken ill. The BBC has reported that the driver has tested negative for alcohol and drugs, and the coach’s electronic log book, which records the number of hours driven, showed nothing unusual.
Interski has extended its sympathies to those involved in “this tragic incident”, and has been helping repatriate the victims.