Gatsby, despite his lack of education and the evident lack of time he spends reading the books he owns, has the kind of "street smarts" it takes to fool a lot of very well-educated, savvy people. Because of this, he is intellectually superior to the elite classes he wishes to join.
In The Great Gatsby, education is more important to the elite classes than wealth.
In The Great Gatsby, wealth is more important to the elite classes than education.