Slipshod, interesting points. I agree with this:
Teachers and communities will ascribe greater ability to our children if they demonstrate competence, some of which might be tutored in. They appear clever, and this in itself has significant consequences at least until late teenagerhood.
If you feel your teacher likes you, you feel like you 'fit', have friends etc, you are likely to learn better and there's more chance of a virtuous circle around study being created as you progress. You are more likely to be happy, and everyone learns better when they are calm, happy and not tense and stressed. Some parents I know have convinced teachers that their child is 'able' - they should be moved up a reading level, etc. Eventually it seems the teacher capitulates and the child moves up a level etc. I've noticed if this doesn't happen your child will often not be at a level that reflects their true ability. There's just too many children and too much going on for it to be a level playing field for all. It's fairly subtle, and probably doesn't make a long term difference but once a child is seen as 'bright' by the school staff this is going to help. Lauren Resnick has written about a child that is treated as more intelligent becoming more so (in this sense) etc.
There's a chap who wrote the Talent Code who talks about Myelin and neural pathways being strengthened via practice etc. Not sure if you are familiar with that? Myelin apparently makes neural connections stronger and our brains work quicker and better when 'deep practice' takes place. Something like that anyway.
Also I've noticed something interesting with the admittedly few exceptionally gifted children I've known over the years. In every case their parents fed their desire for knowledge and so enabled their talent. Family excursions were to science museums and the families weren't habitual TV watchers etc. Often a parent had a passion for science, maths or similar and given their nature they couldn't help but enthuse at meal times etc, this rubbed off in every case. Weekends were purposeful, visiting places of interest, walking, TV limited to good quality age appropriate films etc.