Even with the different methodologies and research questions, the researchers of both U.S. studies emphasized in interviews how similar their results actually were. The Florida study calculated that the academic gains, which materialized in the second year after the ban, were less than a percentile point, the equivalent of moving a student from the 50th percentile, dead in the middle, to the 51st percentile. In practical terms, the difference between a tiny gain and near-zero effects may not matter.
One possible explanation for the disappointing U.S. results is that students are still surrounded by digital distractions even when phones are gone. David Figlio, the lead author of the Florida study, said students often shift to texting, gaming or social media on laptops and tablets that remain permitted in school.