Bean-counting Arizona Tax Credits

(Guest Post by Matthew Ladner)

The Arizona Republic ran a complex story with an unfortunately simplistic headline: Tuition tax credits drain state money.

The reporter made a serious effort to bean-count the individual and corporate tax credit programs. The headline is all the more unfortunate given the fact that by the Republic’s own estimation the program results in a $3 million savings to taxpayers.

 I wish someone would “drain” my bank account in a similar fashion.

The corporate tax credit, which makes only those switching from public schools eligible, was designed to generate savings, and obviously does so. The individual credit does not have the same eligibility requirements, and thus is a good deal more complex.

The Republic reporter, Ronald Hansen, made a good faith attempt to estimate the potential costs and/or savings of the individual program by looking at the National Center for Education Statistics figures on private school enrollment from before and after the tax credit passed. Making the assumption that the increase can be attributed to the credit, Hansen then made estimates regarding the number of kids who would not have gone to private school without the credit (savings generators) versus the number benefiting from the program but who would have gone to private school anyway (cost generators from the state’s perspective).

In short, this is an incredibly complex task- an attempt to estimate the price elasticity of demand for private schools. Hansen has made a serious attempt at estimation, but it is fraught with peril.

For starters, there are more than one estimate of private school attendance in Arizona. The estimation technique is highly dependent on this, and the Arizona Private School Directory lists more than 3,000 more private school students than the NCES. It would not shock me if they both underestimate the true number, which would generate larger savings.

Second it is also important to note that several other things happened during the same period of history. Arizona, for instance, is closing in on 500 charter schools being in operation. Ron Zimmer of the RAND Corporation and two colleagues studied the impact of charters in Michigan and that private schools lost one student for every three students gained in the charter schools.

There are over 100,000 students attending Arizona charter schools. In the absence of the tax credit program, there would have been a substantial overall decline in private school enrollment. Whether those kids went to charter or district schools, they would have cost you money. More to the point, they will have led the Republic to seriously underestimate the number of private school children who would otherwise be attending public schools without the tax credit program.

If private choice opponents are scandalized by the thought that the credit might cost the state money, I’d like to call their bluff. Arizona lawmakers can create a personal use tax credit for students switching from public to private school (i.e. my kid switches to a private from a public school, I take a tax credit). We can set the maximum credit at $3,000, and taxpayers will save thousands upon thousands of dollars every time a kid switches. Such a program would help close the state’s yawning structural budget deficit.

Any STO critics willing to cut out the middle man for the next generation of parental choice reform and save big money in the process? Or is generating savings not the real issue? If not, let’s keep our focus on real issues. Email me at and let me know.

2 Responses to Bean-counting Arizona Tax Credits

  1. […] original here:  Bean-counting Arizona Tax Credits « Jay P. Greene's Blog By admin | category: private schools | tags: academy, are-over, are-required, […]

  2. Minnesota Kid says:

    The best way to estimate what percentage of students eligible for targeted school choice programs would have gone private anyway is to look at what happens to the control groups in experimental voucher evaluations. They represent the ideal counterfactual — what would have happened to the “treated” group absent the intervention. What you find is that 3-12 percent of control group members go private on their own if they lose the voucher lottery. These are students highly motivated to leave the public school system, but only around 10 percent or less are able to do it without financial assistance. Bob Costrell of the University of Arkansas factored that into his outstanding analysis of the fiscal impact of the Milwaukee voucher program that can be found here:

    Click to access Report_2.pdf

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