The time it takes to deplete a fully charged battery while the Chromebook loads a sequence of web pages over WiFi. The screen is set to a specific brightness that's usable indoors or outdoors.

With the K-12 discount, the starting price for an 11.6-inch MacBook Air is $849, for instance. The Lenovo N22, a popular education-focused Chromebook ... ($189), the Acer TravelMate Spin B1 ...