Lots of evidence on student boredom. An explanation of the reasons behind that boredom and disengagement may be what Plucker and Peters uncovered in the article below.
| JSTOR DailyThe-Myth-of-the-One-Size-Fits-All-K-12-Buying-Cycle
2017 GCQ Peters et al Millions take gap year
preckelgoetzfrenzel and boredom
Bored Out of Their Minds | Harvard Graduate School of Education