How to get around my schools Wi-Fi?

My schools Wi-Fi is set up to block twitter instagram and facebook and YouTube. I have a iPhone 5s and I heard that there's an app that allows you to get around it. I want to get around the Wi-Fi so I can use the apps without using up data. So if there's any tips or tricks or apps that can work for this situation it will be highly appreciated.

My pinga is really big

There aren't any apps, but if you know the name of your school's filter you can look this up.

Easy, wait until you get home and access all those types of sites from your home.

There are probably ways of getting around the blocks, but that will be risking getting into big trouble. Don't take the chance.

Its called a VPN there's a great one I use at my school its called Betternet in the appstore. Form Brandon pardue DX