I have an 8yo child with CAS (Childhood Apraxia of Speech). Because the first two schools he attended didn't deal well with his CAS, he only really began to read about a year ago. He reads at a first grade level. However, his comprehension (when I read to him or he listens to audiobooks) is somewhere around middle school to junior high school level.
This makes reading a constant struggle. He can read Mittens the Kitten. He wants to read Tolkien, Asimov, Jules Verne, and Mark Twain, and compared to them, the things he can read seem "boring and dumb" (his words). I'm trying hard to find things that are good enough to keep his attention, but easy enough for him to read on his own to gain practice and confidence.