PHOENIX — The Latest on a grassroots group’s attempt to block Arizona’s school voucher expansion law (all times local):

12:35 p.m.

Members of a grassroots group that opposes Arizona’s new school voucher law held a rally outside a public school as Republican Gov. Doug Ducey visited it Thursday morning.

The group called Save Our Schools Arizona has succeeded in at least temporarily blocking the school choice program by filing petition signatures earlier this month.

Melinda Merkel Iyer says she attended the rally because she’s tired of watching the state Legislature and the governor systematically starve public education.

Ducey says the state has embraced school choice and that he wants students and parents to have more options regarding education.

The group turned in more than 111,000 signatures. About 75,000 signatures must be valid to block the law until voters can weigh in next year.

12:12 a.m.

A lawsuit has been filed over an attempt to delay the expansion of Arizona’s school choice program.

The Goldwater Institute conservative think tank was part of a coalition that filed the lawsuit Wednesday, saying the attempted delay has put many families’ educational futures in limbo.

Earlier this month, an anti-school choice group filed petition signatures to halt the program’s expansion.

Opponents of the state’s sweeping new school voucher law want to block it until voters can weigh in next year.

The measure is temporarily on hold until the signature certification process concludes.

The law extends eligibility to all 1.2 million Arizona students by 2022, but it caps enrollment at about 30,000.

Voucher backers say they give parents more choice, while opponents argue they siphon money from cash-starved public schools.