Mauricio, I understand your concern but I think it is a good idea to keep things in perspective. First I realize the convention we were brought up with is to get our kids the maximum amount of quality education in the shortest amount of time possible. I know plenty of examples of people that were raised this way and have very successful careers. I am referring to master/doctors of various disciplines all of very wealthy means if not outright millionaires. While these persons are no doubt smart what really distinguishes them was the ability to dedicate large amount of time studying. From my experience to get from a B average to straight A's takes about an additional 25-35% amount of time, which when one does the calculations leaves very little time for other activities. In other words, training our kids into straight A students requires a great deal of dedication of time on their own part which will conflict with other activities. While this will probably most certainly guarantee them a life of financial security and even recognition of excellence among their colleagues what about the consequences? The fact is from my personal experience with close friends, colleagues and acquaintances with this mentality is they basically don't have a personal life. Not only do they have little time for the spouse but much less time for their children, who they inevitably raise as little machines who do the same as their parents. Furthermore, teaching one's children to push themselves to the maximum for material and worldly gains generally makes them arrogant in outlook regarding other persons, which is not a trait you want you kids to have. With all due respect this is not a well rounded education and also has obvious negative implications for society in general like we see back "home".
Therefore, instead of following the herd, learn the Latin "model". Do just enough to make your niche and get home by 6 in order to have time to play with the kids, etc. My own personal model is for my kids to get a decent education and grades and for me to save up enough money so that they can have their own business with a stable, but not exaggerated income. Given the fact that I don't place a great deal of emphasis on material things, my children won't have the burden of consumerism and thus can live with less income. The results are a less stressful more social family life that in reality is the envy of anyone in the West.