User blog comment:WarrenWitch/A Grimm Situation/@comment-4010415-20140929222612

We've been told that Beowolves are the lowest level grimm. We have also learned that Ruby is highly skilled, enough to skip two years of training. Yang's semblance allows her to use energy from getting hit, and Lindsay said that Yang draws power from her hair, so I'm inclined to believe that she stores the energy in her hair, which is why she was able to unleash her semblance on the Ursa even though she hadn't gotten hit.

Overall, though, I think the problem is that the grimm we've seen have been weaker than grimm that are in the true wilderness.

The first time we saw grimm in the show was in the Emerald Forest during the first-year initiation. Ozpin may have some very unorthodox methods, but he's not stupid. No reasonable headmaster would launch first-years into a forest full of full-fledged grimm. Though, of course, we saw a giant Death Stalker and a giant Nevermore, but neither of those could be killed by a single person. And you have to think, part of what got rid of the Death Stalker was the bridge collapsing and it falling into the abyss.

As for Forever Fall, the same thing applies: Why would they take first-year students to a place full of full-fledged grimm?

I think the grimm in the true wilderness - beyond Vale, the Emerald Forest, and Forever Fall - are more dangerous.

The Emerald Forest and Forever Fall border Vale and Beacon, so of course the grimm are going to be weaker there. Hunters likely keep the grimm population in check in both of those places as much as they can.