"Otus is an easy-to-use, yet powerful classroom tool that brings the best iPad and Chromebook education features together into one secure environment, and uses a single Google login."
I must say after reading this tag line I was quite intrigued to give Otus a look and it IS a complete mobile learning environment for schools. Otus comes in two free iPad apps one for the teacher and one for the student. Keep in mind when downloading it will state that it is a 17+ app and the reason for that is the built in browser. However, a educator can monitor browser activity inside of Otus as well as a school should have a filter in place via their district policy (Although, it is widely recommend to view your students/child's browsing habits to make sure that they are not viewing anything inappropriate). Also, a user (teacher/student) will need a Google account to login.
As w/ most Learning Management Systems (LMS) Otus allows educators to create classes, manage attendance/assignments/grades, poll students, and more. They can create digital bookshelves to host all kinds of digital media (i.e. books, videos, sites, etc) and assess students in real-time. The split screen feature allows users to take notes using any feature of Otus as well as taking notes during browsing.
I highly recommend checking out Otus by clicking here!!!