About the board games. There have been documented studies about how much playing board games can advance math skills. Spacial reasoning, predicting, etc. is a big part of it.
We all know that when we play monopoly we've constantly thinking in our head "I need # to land on x." You don't have to count it, you just know it as you learn the space of the board.
This is true, my dd learned to add and subtract at 4 yrs old because she wanted to be the banker all the time and I told her she'd have to learn to do that and now, as a 4th grader she is doing 7th grade math.
Same for scrabble, it has really helped to build up my kids vocabulary and spelling since we keep a dictionary around as we play and we let the kids have "free" turns to look up words. It is truly amazing to see how much certain board games do help with expanding knowledge.
Lastly, I keep seeing the words "loser" and "bad kids". Some of these kids that you are referring to are under 8 years old

. They are that way because of their upbringing or lack of. They NEED to know there are adults in the world who care and are willing to take the time for them (they need this at any age). Why would a grown adult be jealous over what little extra they may get from a school?
More often than not, these kids are made fun of at school, the victim of jokes, laughter (at their expense for not being smart enough, not wearing the right clothes,etc). It's good for them to be in a school setting where they are all on the same grounds for a few hours through the summer to show them what school could be like, to help and encourage them to do better.
Yes, there are going to be those that just fall through the cracks, that happens EVERYWHERE, nothing is 100% guarantee in life (only death is the 100% sure thing to happen). But if this program reaches out and helps even ONE child............AWESOME!!!!! Never know when that one child it helped could be the person who has came up w/ an idea/or done something that will save one of YOUR family members.
I know I wouldn't trade my childrens upbringing that I give them and how well they do in school so they could have the "free" things in life. They have a good foundation and I could only hope that these school activities could help foster that in other kids who aren't so lucky.