Just commenting on the Google Classroom piece: in our school, we usually add parents who want to see their student's class information as both parents (you can see the specific child), and as students, so they have access to all of the assignments.
On Schoology, parents can see students' assignments, messages between teacher and student, submitted work, etc.
Our school has been very reluctant (unable?) to allow parents to be "students". I am not even sure if it is possible for them to add parents as students if they don't first give the parent a school assigned email. There is a fair level of understanding the problem is real, and a willingness to help on the school side, but no real progress has been made towards being able to provide a window the student view. Just getting the parent view working was challenging despite best intentions.
