...every time?
Coz DS2 is like this! An example: This morning he learned a list of 12 words, via the 'look/cover/write/check' method. All 100% correct. Then I got him to spell the 4 or 5 similarly 'complex' word he got wrong in a written piece of h/w yesterday (Y6, his teacher takes no prisoners: spelling mistakes = a complete re-write in break time!) and guess what? He made exactly the same mistakes as he'd originally made. Despite having apparently 'learned' them when I corrected his writing and he'd rewritten it out correctly!
However, I bet if I asked him to re-spell the list of words a few hours later, he'd get most if not all right. It's as if he can spell words if they are read to him, 'stand-alone' but can't if they're in the body of some text.
We have a similar problem with capitals at the start of sentences. Yes, he knows the rule. No, he rarely applies it. But yes, mum, I know!
Why?