APS/Discovery Ed Contract provides for secret keeping

APS just signed an $11,334,977.84 contract for techbooks (electronic textbooks) with a company called Discovery Education. The contract includes "professional development services" in the amount of $1,117,500.00."

The contract, link, contains a paragraph I found interesting, emphasis added;

10. Discovery understands that government entities, such as Subscriber, may be required to disclose information pursuant to applicable open records acts. In all other respects, all provisions of this Agreement (“Confidential Information”) shall be kept strictly confidential by Subscriber and may not be disclosed without prior written consent, except for any disclosure required by any order of a court or governmental authority with jurisdiction over Subscriber.

In other words; even records which APS knows to be public records and ultimately subject to surrender under the Inspection of Public Records Act, cannot be surrendered unless a citizen successfully sues them in a State District Court.

Why must any of the terms of an $11.3M contract be keep secret from the folks who ponied up the $11.3M in the first place?

What is it they need to hide?