From the CBC:

Revelstoke British Columbia's second tragic avalanche in three weeks killed seven young backcountry skiers on Saturday.

The skiers were in a group of 14 students and three adults from the Strathcona - Tweedsmuir private school south of Calgary.

Six boys and one girl died, all were in Grade 10. Some were buried under three metres of snow.

Ten survivors, including one with a broken ankle, were airlifted to Glacier Park Lodge.