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.

Here's the direct link