[quote HaveringWavering]@Abraxan the point is that anyone working in education should know that the standard meaning of “grammar school” is “academically selective, free state school”. The school OP is referring to may well have “grammar” in its name but her dilemma is all about how to afford the fees. Therefore, when posting here, she needed to explain in clear terms that the school was a “grammar” in name only, but that fees were payable.
Let me explain this for you.
My dog is called Kitty. If I post on here and say “Can anyone advise me the best food to feed my pet Kitty?” I am going to get 100 recommendations for cat food because people automatically go with the standard meaning unless told otherwise, and I should know that it has to be explained.
OP could be excused from not knowing that the default meaning of “grammar” means a state school if she had had no professional involvement in educational after all, grammars are not in all counties now and her local independent school is called X Grammar- but as a teacher you’d have to be living under a rock not to know this![/quote]

I also work in education and have done for 25+ years, plus used private education for DD's primary and secondary education.
Many areas throughout England do not have grammar schools. The only 'grammar' schools in some areas are private ones which use the grammar school title in its name.
Like many private schools use the title High school units name. Locally people will refer to those schools as 'the grammar school or 'the high school' in my experience (from being in a non grammar area) so I can totally see why the OP may well have dine this - something which they then clarified in one of their later posts, for those not used to seeing non state selective using the title.
You can try and make it a bigger deal and use it to try and trip the OP up if you really want, but tbh it says more about you as a person than it does the Op. 🤷♀️