I am often told that pointing out the serious shortcomings of government-funded school vouchers and the relative superiority of education tax credits is a case of “making the perfect the enemy of the good.”

It’s isn’t.

That is a misapplication of Voltaire’s famous aphorism. What the aphorism exhorts is that we not pursue an unattainable perfection when a good alternative is within reach. Education tax credits are not only attainable, they are usually easier to obtain than vouchers. Consider a recent example: Pennsylvania’s state House has voted 190 to 7 to expand its existing EITC tax credit program while the state Senate has been deadlocked for weeks looking for the bare minimum of votes to pass a voucher bill.

On top of that, it is dubious to cast vouchers as “the good” when they will expand the scope of compulsion of taxpayers to funding many new types of schooling to which they might well object, impose heavy new regulations on private schools (homogenizing the available “choices”), and more pervasively curtail direct payment by consumers in favor of third party government payment.

Even those who may not be fully convinced that vouchers are inferior should pause before trying to enact them in states that already have education tax credit programs with good growth prospects. Why make the dubious the enemy of the pretty darned good?