MINNEAPOLIS (WCCO) — Tougher rules are coming to high school hockey due, in part, to an accident that paralyzed a Minnesota player.

The National Federation of State High School Associations has moved to increase the penalty time for checking from behind and boarding.

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Those are considered the two most dangerous plays in hockey.

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Minnesota put the tougher rules into play after Benilde-St. Margaret player Jack Jablonski suffered a spinal cord injury sustained after he was checked from behind by another player.

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The changes will begin next season in 17 states.