DS is 7.5 in Year 3, and what I would call a 'reluctant' reader!
He can read and is an above average reader for his 'age' (although one of the weakest readers in his class )
He would find Horrid Henry fine, probably fine with Roald Dahl, but Harry Potter would be way beyond him (probably for emotional reasons as much as 'technical' reasons).
He can 'de-code' words well, and mostly only gets the more tricky words wrong - especially if there are alternative sounds.
Was listening to him read last night, and he coped fine with words like 'extraordinary';'spluttered'; 'handkerchief' etc.
He needs to work on his fluency now - I always ahev to check if he really understands what he is reading. He doesn't always get the intonation (e.g. in speech) in the right place.
However my biggest problem is that he simply DOESN'T read for pleasure - rarely picks up a book (except his Star Wars manual and the Beano).
DS1 (same parents, same support, same books at home etc etc) is a bookworm, and had a reading age of 14 when he was 7.
I'm hoping it's a phase for DS2