What percentage of prep school students have repeated a year?

There's no readily available, comprehensive statistic on the percentage of prep school students who have repeated a year. This kind of data isn't consistently tracked or publicly reported across all prep schools. The reasons are numerous, including:

* Privacy concerns: Student academic records are considered private information.

* Variability in school policies: Retention policies differ significantly from school to school. Some may be more lenient, while others might have stricter standards.

* Definition of "repeating a year": The definition itself can be nuanced. A student might repeat a grade entirely, or repeat specific courses.

To find this information, you would likely need to contact individual prep schools directly and request the data, which they may or may not be willing or able to provide. Even then, you'd be compiling data from individual schools, and it wouldn't represent a nationally (or even regionally) representative sample.