Does social class determine marriage? Steve Sailer has put forward the idea that "class is about who your descendants are likely to marry." But just how meaningful is any definition of class is contemporary American society? Below, I present Pearson correlations between your father's occupational prestige when you were 16, yours now, and your spouse's. (It would be nice to look at your spouse's father's occupational prestige, but the GSS doesn't have it):
Pearson correlation coefficients
These connections are pretty weak. The one that most directly measures your family's class with that of your spouse's is the last one listed, and it is only .27. If this correlation were not reduced by the influence of controls in a multivariate analysis, then your family's class explains about 10% of your spouse's class.
It is possible that a direct measure of your spouse's father's class might be more highly correlated with your own father's, but it seems doubtful when these numbers show that there isn't much of a correlation between your father's class and your own as an adult. The fluidity and individualism of American society makes the idea of class less meaningful.