There's no actual test that is recognized in the magick community.
If you are unsure of what you're doing, seek a teacher and learn your basics. Any decent teacher will be able to help you based on what you are showing them.
And the weather spell....Not to say you *can't* practice magick, but weather spells ( to me atleast ) are more for confidence and very difficult to prove you actually created.
Snow in Ohio during the winter, isn't a spell. It's mother nature. It would be like me claiming I made the rain stay away in the desert for 230 days out of the year even though it's common.
Now come this summer, if you make a snow storm happen there I will gladly eat my own words lol