Elf - paradoxically it is precisely the teaching of letters and numbers within out of home child care settings that so many people are against.
As any sensitive parent of a four or five year old knows, it can be done in a fun way.
It doesn't have to be a formal sitting around table with pencil and paper exercise.
E.g. each child may have a homemade place mat with their name on, or shaving foam numbers and shapes may be sprayed onto a table for the children to do whatever they want with.
Children of that age are natural mimics and most of them want to be helped to make sense of the adult mysteries of reading and writing.
Sensitive parents help them at a pace they know their children can understand, and that's exactly what the EYFS advocates too. A child led approach where each child's stage of development is taken into consideration.
I understand your concerns about people 'reporting' on your child. As a parent that would get my hackles up too. As a childminder however I can assure you that any reporting I do is directly to the parents who always want to know all about their children's behaviour when in my care.
The only other reporting I would do would be to an Ofsted inspector on my inspection. For example, if an inspector asked me to describe at what stage any child I care for is at I would be able to reel off a whole list of anecdotes and examples of any individual child's interests,achievements, and my plans for their future play opportunities. There isn't even any statutory need for this info to be written down as long as I can show that I know the child and have provided/am providing a good environment tailored to that child's needs.
Kay - high five! Of course reflection on practice is good. Isn't that what we all do painfully as parents from the moment our first child is born? I've been a parent for 21 years but I sure as hell haven't been doing the same thing for 21 years - I'm on my third teenager now, and fourth 6yr old, and still exasperating myself by trying out new ways of dealing with them