World-class used in a sentence

World-class in a sentence as an adjective

Here's the job post:Our mission is to provide a world-class education to anyone, anywhere.

There were rumors of a Facebook phone, perhaps Facebook is building their own hardware and need a world-class design team to craft its OS?

Microsoft is not composed of morons, their engineering is world-class, and they're not out to ruin their business or their product line.

Most of the members are world-class experts in formal verification analysis and try to integrate their knowledge with missions as effectively as possible.

Honest question here: Why would anyone ever think OS X has "world-class interface design"?It's missing basic interface features that have been bog standard in Ubuntu/Windows for years, like any sort of proper window management.