So, my intake of 12y was higher than suspected, it starts already at 10

That is new for me as well
And something else, you cannot take a 10y old western child as an example of a 10y old Dominican woman.
The Dominican education may have failed, but they don't play with dolls anymore, if they have a younger brother(s)/sister(s) they have to take care of them already at very young age.
Cleaning the house, cooking, attending the younger children is "common".
Most (!) of them are already "grown-ups" at the age of 10 while a western child of the same age is still playing with her dolls, those young-ones (12 and up) are already discussing about having babys and who is a good husband.
To inform/educate those groups, and against all thoughts it is not just "barrio" culture, but "village" culture as well, how can we reach those people ??
Newspapers??
NO, most of them can't pay for that
Free brochures??
Who went to school to read them?
Radio?
What/where electricity?? and after that, music is more important than those boring talking people
Television??
What/where electricity?? and after that, "novellas" are more important than those boring talking people
Discussion groups??
Maybe, but who can bring in those little people who have to work (job or house) and only have time to cook and maintain the house.
It will be a hard job, but is absolutely necessary, if only the goverment had some REAL interest in those groups.
Than there could/would be schools/institutes with a kind-of social kitchen, where the rest of the family could get cheap/free food, and than the knife cuts at both sides, some of them are in school to learn/study and can be reached for additional information, others will be having their food in the kitchen, and you can reach those people as well while they are eating.
But till now, every president is more interested in frontpage-news with a new suit and watch, and/or being "good" for his followers or the people he owns a "favor", the wealth of the few, this will be an almost "impossible mission"
A plan as this won't cost/loose billions of dollars, and will create more educated people, but it is a difficult plan, because the few with real power, cannot get rich by such a plan.
My conclusion is that the problem is in the lower classes, but the higher classes are just "fine" with this situation, and for that i blame them more, because they KNOW what is wrong and (almost) don't do anything to solve the problem, while the others never learned how-to deal in those situations and therefore i cannot blame them.
If you never learned how much is 1+1, you never can give the right answer