Does going to daycare over have a stay at home parent lead to an increase in the money made? And if we were considering just the number of children and how having more children will lead to more tax payers, then cutting funding for education in ways that result in more children being had is even better because you save money now and have more tax payers later.
If you begin to optimize social and political decisions on the basis of having more tax payers, you'll get weird results. For a second example, cutting reproductive education funding in schools will lead to more tax payers (though arguably tax payers who pay less, so then the question becomes are you optimizing for tax payers or for future taxable income in total).
There is a well established correlation between education in girls increasing and child birth rates decreasing. Unless you think that funding could be cut without decreasing education rates, in which case shouldn't we cut funding?
If you begin to optimize social and political decisions on the basis of having more tax payers, you'll get weird results. For a second example, cutting reproductive education funding in schools will lead to more tax payers (though arguably tax payers who pay less, so then the question becomes are you optimizing for tax payers or for future taxable income in total).