I cannot fathom how stressful this app is. Sometimes when I pass, it doesn't save. Sometimes it doesn't load. Sometimes, text enters quantum mode and has a spasm. Sometimes, it lags and sending documents become slow. What. What. Whatwhatwhatwhatwhat. What's worse is Google doesn't fix the bugs, at all. It's been months, years, nothing changed. I am going insane. Urge your school to choose another learning app, please. Look at other reviews, I am not alone. This app is terrible.