I was talking about the figure claiming to show changes in PISA scores caused by various technologies, for which I can't find the source. I didn't look closer

I was talking about the figure claiming to show changes in PISA scores caused by various technologies, for which I can't find the source. I didn't look closer at the West Point study, but I did read reference 13, which by the way required the use of electronic devices for in-class testing, so it did not actually compare classes permitting electronic devices against those that did not. Rather, it had a proctor remind students to put their devices away when they weren't using them for the lecture.