It’s time to admit that the well-meaning experiment of fact-checking and content moderation was misguided.

Given the large unconditional heterogeneity ( I² = 81.2% ), the mixed-effects moderator analysis shows that the publication type (published studies), grade level (middle and high school level), ...

Also, the findings of moderator analysis indicated that the flipped group performed better when some extra activities and exercises were accompanied by pre-class materials. We conclude that although ...