where you are highly articulate and, no doubt, your daughter will be too.
The problem with debates about grammar, spelling and (implicitly) register is that most of the actors are made of the purest and driest straw. On the one hand we have "correct nothing for it will impede their creativity" hippies from Melanie Phillips columns (who don't exist) and on the other we have Gradgrindian "beat them until they don't split infinitives" from Michael Rosen columns (who also don't exist). It's worth noting that both Mad Mel and, er, Mild Mike write like angels, and therein lies the problem.
Articulate (by implication, articulate in standard English) parents have children who are in general skilled in the use of standard English because it's the working language of the household. When in the 1970s and 1980s it became fashionable for some schools to pretend that there was no such thing as standard English, and that you could speak and write nothing but Lancashire dialect without any economic impact on your life (again, obviously, I have some straw available to build this caricature), the middle classes were perfectly safe: their children spoke and wrote standard English anyway.
The risk is that people who have access to standard English, and whose children have access to standard English, deny knowledge of that register to the children they teach. And those children arrive at interviews unaware of the fact that the language they write and speak is condemning them to being ignored. You can argue that that shouldn't be the case, and that universities and employers should interview people who speak heavy dialect, deep patois or simply ungrammatical English with no prejudice at all, but they will. And for people who have access to that standard register to deny knowledge of it to people whose parents don't have access to it strikes me as entrenching disadvantage.
So it's a fine line between building self-esteem and trying to reduce intergenerational disadvantage. Ironically, children whose parents don't speak English (either at all, or very well) and fall into the category of EAL/ESL/EFL get better support, because they're assumed to need language instruction, while there's a tentativeness about the same instruction for native speakers. It's complex, and caricatures like correction being about "feel(ing) smug or mak(ing) children feel bad about themselves" don't help.