No, intelligence is mostly inherited. If your biological parents were smart then you will almost surely be smart and vice versa. And smart people end to earn more money, so intelligence is indirectly correlated with parental wealth. But when you put kids from poor parents into rich households they will continue to do poorly. They do a bit better, but their biological parents still matters more.
If it was easy to produce smart kids then we would already do it, since smart people are so much more valuable to society the small amounts it requires to add that extra value would be nothing. But no country has managed to do this so far, its just a slow climb that follows the same trend in every western society no matter what policies they implemented.