[Cjmovie]

It records visits by IP information simply from the image being loaded (this is why it's required to have the image of your site's place on the website, every page).
So to get a jump this high, it would require that many unique IPs loading the page. Generally that requires either a lot of individuals or a lot of proxies :-)

However, proxies is by far in the realm of doubt as there's no easy way to find that many that work well and fast enough to not timeout. My best bet is that they ask everyone at their school to visit every day.