If you're tired of waiting until the last minute to find out whether or not you have a snow day, I've got an awesome website for you. It's called the 'Snow Day Calculator.'

You enter your zip code, along with a few other bits of info and it gives you a percentage of likelihood that you'll have a snow day!

There's also something where you enter the level of 'hype' for a snow day (meaning how much kids, teachers, administration, and the media are talking about a possible storm). Then click 'Calculate,' and the site grabs data from weather.gov.

The site was built by a 16-year-old 11th-grader in Watchung, New Jersey named David Sukhin. He came up with the algorithm when he was in the sixth grade and he says it's never failed him once.