* Age: Younger children may have different perspectives than teenagers.
* School environment: A positive and engaging school environment will likely result in lower boredom rates.
* Individual learning styles and interests: A curriculum that doesn't cater to diverse learning styles will lead to higher boredom levels for some students.
* Methodology of the study: Different survey methods and question phrasing can significantly impact results.
While numerous studies touch on student engagement and boredom, they rarely offer a single, globally applicable percentage. To get a meaningful answer, you'd need to specify the age group, location, and type of school being studied.