Yes, it was written by the founder of Scientology but this is a non-religious text for members of all faiths.
If you actually read it you will see that it supports your values whether you are Christian, Muslim, Buddist or some other faith.
While I find it fascinating that a science fiction writer managed to start a religion based on what most people would consider entirely crazy ideas, I have to admit it’s not all rubbish. If you take out the parts that seem like they’re straight out of a sci fi book, or the parts where he’s trying to convince you to join the religion, most Scientology writings do have a solid base. In terms of character building, I think the LDS resources are better though. I don’t subscribe to either religion personally, but I think it’s important to give children a solid moral base.