On this weekend's "Sunday Square Off," the candidates for Arizona superintendent of public instruction face tough questions about their readiness and plans for the job:

-Have Democrat Kathy Hoffman's five years as a public-school speech therapist prepared her to lead the Department of Education?

-Would Republican Frank Riggs introduce "intelligent design" - a pseudo-scientific explanation for the Bible's creation story - into Arizona's school curriculum?

-How would both candidates respond to alleged abuses of the state's laws on charter schools?

-Do they support the current school voucher law?

-Should lame-duck incumbent Diane Douglas try to change Arizona's education standards before she leaves office in January? Douglas lost her bid for a second term in August's Republican primary.

Early ballots for the November election go to voters on Oct. 10. The deadline to register for the election is Oct. 9.

"Sunday Square Off" airs at 8 a.m. Sundays on 12 News, after NBC's "Meet the Press" with Chuck Todd.

Is Hoffman prepared to lead Department of Education?

Have Democrat Kathy Hoffman's five years as a public school speech therapist prepared her to lead the Arizona Department of Education?

Would Riggs bring 'intelligent design' to classrooms?

Would Republican Frank Riggs try to introduce "intelligent design" - a pseudo-scientific explanation for the Bible's creation story - into Arizona's school curriculum?

Do candidates support more school vouchers?

Do the candidates for Arizona school superintendent support expanding school vouchers or eliminating them?

Candidates react to alleged charter-school abuses

How the candidates for Arizona school superintendent would respond to alleged abuses of the state's laws on charter schools.