SpellCasters probably has a very bad reputation here, however there are way fluffier and less decent covens if you observe them closely. Spell casters is a very big coven, however it is more equitable than many existed covens here.
Probably every coven has its 'fluffy pets', but the mature and experienced members take control of their covens and supervise it.
I agree that in big covens wrong and obnoxious information can be found in your place, so I'll tell you this:
Use your logic and maturity and you'll be fine and educated. Good luck with your studies and I hope you enjoy your coven and settle well.