Not sure if this is the right place to ask but my school currently has an internet system which allows you to connect anywhere in the school via wi-fi, in which you would type in your assigned school username/password for login. They have blocked access to certain websites such as reddit, and block the use of most apps which require internet such as games, snapchat etc. I was wondering if there was a way to bypass these restrictions. I would really like to play FFRK at school :P. Ive tried using Hotspot shield, but it was stuck on the connecting screen so maybe my school blocked VPNs. So could i get some help 
Just try different VPN apps. Possibly consider paid ones if necessary.
No, just don’t connect to WiFi and use your mobile data quota.
Betternet used to do the trick for me.
Try Surfeasy VPN. I use it a lot. Make multiple accounts and get yourself lots of free data. I have two accounts with around 2 GB of free VPN access.
This isn’t what you want to hear but, I am fairly sure you won’t get much help here on this subject. Circumventing their security is I am sure against their rules. Also you are logged in with an account that gives them your identity so even attempting may not be a good idea.
Your only real choice is to try and get them to remove restrictions for specific things but I really doubt that will work either for a game.