"best of class" is correct and usable in written English.
Usually, it is used to refer to being the best in a particular category. For example, "John received the award for best of class for his presentation."
It won "best of class" for the region.
Seven "best of category" and 28 "best of class" awards were given.
It garnered best of class honors at Pebble Beach in 2001.
ADOBE EAST GALLERY "Best of Class: American Indian Art Show," featuring fine katsina dolls, pottery and jewelry.
Perhaps the most flattering was the one for Roanoke Vineyards' 2003 Blend Two ($38), voted "best of class" among red blends produced from vinifera (classic European) grapes.
Data can save lives, and for that reason there would seem to be a moral duty to apply "best of class" approaches to its analysis.
But that evening, none drew more attention than a relatively new member of that best-of class: Representative Paul D. Ryan, Republican of Wisconsin and now Mitt Romney's running mate, who spoke passionately about the threat posed by the national debt and the radical actions needed to rein it in.
CHESS plays a leading role in development of innovative instrumentation in support of first- and best-of-class experiments.
Cars compete for a best-of-class award, and the best-in-class winners vie for the best-in-show title.
Positively screened socially responsible investment funds (ie those that actively include best-of-class firms, rather than simply excluding ethically dubious stocks) represent one way of doing that.
Future-proof planning, by incorporating the best-of-class research findings in information science, data science, and other fields into our policies, planning and practices.
