We have about 100 of them in our system. What is nice is that you don't see a huge list of chromecasts as a teacher. You only see the ones you have connected with using the code in your list. You also don't have the ads that the new chromecasts have.
We have had these devices for several years now, but this school year we have struggled with them. The code doesn't stay in the computer for the year we have it set up for. We also have had the computers randomly disconnect from the devices. We've had to restart the devices regularly or the codes don't work.
We haven't had a network person on staff in the last year, so we aren't sure if there is an issue with our network or something going on with these devices. If anyone has any ideas, we are open to them as we really like the features that cast moderator gives us but we have been struggling with them this year.