Return array instead of JSON object for Student Classes

[TheBrockEllis]

It would be helpful to re-structure the return value of the Student Classes Endpoint so that it returns an array of objects instead of just one object. Javascript has built-in support for looping through 'iterable' results like arrays, sets or strings but objects do not. (I'm fairly certain other languages have similar constructs, though I can't be for sure without looking into it.)