I don't think I would deduct anything for sending them home due to a power outage as it is beyond my control...but it has never happened, so I'll decide when and if it does! I have also never heard of roads being closed where I live, so it would have to be pretty extreme to consider emergency vehicles not being able to get here or parents not being able to pick up. I guess those of you who live in areas where weather is more extreme have to consider these things more!