The CISA (US-CERT) offers EXCELLENT tips for students returning to school during Fall of 2019

https://www.us-cert.gov/ncas/current-activity/2019/08/20/cyber-safety-students

As summer break ends, many students will return to school with mobile devices, such as smart phones, tablets, and laptops. Although these devices can help students complete schoolwork and stay in touch with family and friends, there are risks associated with using them. However, there are simple steps that can help students stay safe while using their internet-connected devices.  The Cybersecurity and Infrastructure Security Agency (CISA) recommends reviewing the following resources for more information on cyber safety for students