I've just finished reading In a Glass Grimmly by Adam Gidwitz. This is the sequel to A Tale Dark and Grimm. These are both great books geared toward fourth or fifth grade. My favorite part about these two books is how the author interjects his voice throughout the stories. Mostly to caution the readers.
These are the Grimm tales mashed together and still gruesome, but in a way that is not real scary. Kids will enjoy these stories and maybe search the shelves for more Grimm tales.