This article addresses the question of what app or website is appropriate for teachers to use for classroom instruction. While most school districts have safety policies related to the Children's Internet Protection Act (CIPA) and the Children's Online Privacy Protection Act (COPPA) implemented by means of software and district firewalls, this questions is not an easy question to answer, and it's answered slightly differently depending on grade levels, student ages, and website/app restrictions. Although the safety of minors using e-mail, chat rooms, and other direct electronic communications is still an area of concern, Miller points out that school librarians have been and continue to be the primary instructors to teach students and teachers appropriate research skills and methods of accessing information through the Internet. The advent of more mobile devices that allow students to download apps and access websites, and the use of these devices in schools, has made parents and school districts more aware of the importance of keeping children safe while they are online.