As the parent of a child with dyslexia, I'll first echo aeh's excellent advice and add that I'd recommend seeing a reading specialist for an evaluation, even if you are convinced you don't want to put time/$ into tutoring at this point. A reading specialist will likely dig deeper with testing into specific skill-sets which will give you more information about your child's specific challenge.
My next piece of advice - you will not regret having your child work at reading *now* rather than later, no matter whether you are able to access services through the school or have to send him to private reading tutors. I would also recommend getting him access to audiobooks if you can, so that he can be listening to higher level vocabulary than he is reading. Even with extensive (and successful) tutoring, my dd does not like to read - probably never will - and I really can see the difference that makes in her vocabulary development vs my other children.
Best wishes,
polarbear
