I have a friend that is level 99, but the last i heard is that level 90 is the highest. I am at level 109 on cityville with 60,000,000 coins. my energy cap is at 58.
The maximum level is not yet decided but you can go more than level 60.
You can just level up or you you could download the cityville tool which you download from .cityvilletool.com
in the cityville
you can't unless you get a new account :)
Once you get to a certain level, you are able to get the school.
There are no cheats for CityVille, look up CityVille glitches though.
There are no cheats in Cityville - at least not ones where you press a button and you will level up, have a ton of coins etc... Your best bet is to get a guide that will help you like the one you will find in the related links.
one of my friend is on level 88 and i guess there are 95 levels
CityVille happened in 2010.
cityville
Just get rid of everything. It won't change the level but that's how you can restart it.