Tuesday's gathering at the National Constitution Center is sponsored by the Students First political committee, which advocates a "school choice" policy that promotes taxpayer-financed alternatives to public schools.
Republican nominee Tom Corbett, the state attorney general, strongly endorses school choice and advocates making more public money available to pay for tuition at parochial and other private schools.
Democratic candidate Dan Onorato said last month that he favors state grants to help low-income families pay for private education. Onorato, the elected executive of Allegheny County, also favors continuing the state tax credit for businesses that help underwrite scholarships for nonpublic schools.