The phrase "a useful case study" is correct and usable in written English.
You can use it when referring to a specific example or instance that provides valuable insights or lessons in a particular field or subject.
Example: "The research conducted on renewable energy sources serves as a useful case study for understanding the impact of sustainable practices on the environment."
Alternatives: "an informative case study" or "a valuable case study."
Whether the strategy was intentional or not, Gerry McCusker, who has written a book on public relations disasters, believes Kraft's experience with iSnack 2.0 will become a useful case study in using controversy to "cut through the clutter" of the marketing space.
Germany's own history of reunification is a useful case study.
A useful case study is to compare the ability of men and women in math.
After everything has wound down the two schools may have a useful case study to offer.
But before examining why, it's always useful to see what lessons can be learned from the past, and the Large Hadron Collider (LHC) provides a useful case study.
Although Pondicherry has some features that make it a particular case — its wealthy population, for example, or its relatively small size — its success nonetheless offers a useful case study in urban conservation.
The case is of some interest in itself, but it is also, as the authors note at the end, a useful case-study in the kind of moves nominalists can make in eliminating unwanted ontology, and the costs of those moves.
Assisted reproductive technologies (with a particular focus on the impact of maternal age and number of cycles on treatment cost and effectiveness) were selected as a potentially useful case study on which to trial an engaged disinvestment process – for two reasons.
The proposals for expanding broadband service offer a particularly useful case study because the potential benefits of wider network access are indisputable.
The region provides a particularly useful case study for several reasons.
It recommended expansion and modification of existing training approaches to better equip health agencies to respond to such climate-influenced emergencies, observing that 'In the future, Black Saturday bushfires may be a more useful case study around which to model training packages' [ 33].
