Sitemap Flipped learning apparently is catching on in schools across the nation as a younger, more tech-savvy generation of teachers is moving into classrooms. Although the number of “flipped” teachers is hard to ascertain, the online community Flipped Learning Network now has 10,000 members, up from 2,500 a year ago, and training workshops are being held all over the country, said executive director Kari Afstrom.