We are kind of obsessed with this program at my school! We love being able to monitor their chromebooks. Especially today, with half of our students virtual learning and half of our students in school - and all of our students are doing the majority of their work on chromebooks. This is a game changer.
I use the "allow only" feature the most, and have a variety of saved plans that make locking down their chromebooks quick and easy.
So far, the kids have only found one workaround, but it's still easy to see when they're trying to use that workaround. They like to have two web browser windows side by side - we can only see one window at a time on our dyknow home page. But, they chromebook window looks large and disorted when they're doing that. We can't see what they're doing on that second window, but we can see that they have two windows open and they are probably off task. Also, using the "allow only" feature keeps them only on the websites you are allowing at that time.
One of my favorite parts of this is sending custom messages to the kids when they're off task. I like to joke with them and "troll" them a bit. It's also nice to send positive reinforcement too, especially to my kids who are home. Review collected by and hosted on G2.com.