What you really should be concerned about is the namespace of your enums.
Regardless of where your class file exists in the solution, your code will rely on the namespaces. I'm thinking that you'd probably want a namespace like: Questiona2011.Enums
. It won't be a good idea to tie the Enum classes to the Models
namespace - not that it can't be done, but sometimes the views may need to interact with your enums. So I tend to give my enums a separate namespace.
You don't necessarily need to create a folder for the class file... you can keep in in the root directory if you'd like - The real factor is the namespace.
So create a class with the namespace like so:
using System;
namespace Questiona2011.Enums
{
public enum Score
{
One = 1,
Two = 2,
.
.
.
Ten = 10
}
}
Having said that, I'd just drop the class file in the Models folder. :)