It measures the number of data types a class knows about.

Now, the class of '96 finally knew who from its ranks would not be moving on.

I've had clients before who went to him because he's the big name that social class knows about.

The boy had been sitting in class since September not knowing what was going on.

There's no electricity, and the lower classes do not know how to read or write.

"The upper class knows very little about it," Twain said of the game.

The governing class knows what is best, and the people must be made to accept it.

I was sure the professor and the class knew I'd cheated, but nothing ever came of it.

But as the middle classes know, this is only part of the story.

Steve handles everything with the most class of any human being I have ever known.