I would agree with older kids but not a 5yr old. I think after some level, writing would catch etc so issues a younger kid would have, an older kit wouldn't.
If a 5yr old is working on spelling "assessment," or "subsequently" what's the point if DC is not writing at that level and using those words? Rather than move forward on rote subjects like that w/ a kid who obviously spells very well, why not work on subjects which foster a love of learning? Have DC write narrations regarding books he's reading, regarding history, science, a history documentary he has watched. It works on spelling but adds interest and content AND critical thinking rather than just learning to spell list after list of words DC is not using in everyday writing.
I can see the issue coming up w/ my DS. He might be ready for high school level chemistry, but not writing lengthy lab reports when he hasn't developed the stamina.
