I believe that schools should not be able to see what you do online. It is an invasion of a students privacy. They should have a right not to stalked online, whether by teachers or not. Students also have a right to free speech. They should be able to say what they want online without fear of being reprimanded by teachers who invade their privacy. If teachers have access to you online, you have zero online privacy, which is not a good thing.
They need to be monitoring these things because kids can get on to do "work" and can watch videos (on sites the school allows) play games, and other things. These are good ideas because different people can go to other websites and not be focused.
It's not invading privacy. They only should be doing work. Not texting a boyfriend/girlfriend, not playing games, and other things. All they want you to do in school is to work, and have fun while being on task. Not completely skipping the tasks.
I know it is not an invasion of privacy inside of schools, but outside of schools it is a complete privacy invasion. When you leave school, your online activities should become private. When you leave school, you should have complete privacy. Schools have no right to invade your privacy outside of school.
I'm not talking about outside of schools. If they don't study or do work outside of school, that's the students fault. I'm talking about inside of school. When they need to be doing their work at that moment and not doing anything off of the websites/materials that they are using their phones for.