Turn off roku tv in my kids room

I have the Roku app and was excited to see that I could connect to each TV in my house from my bedroom.  I have 3 kids, and I want to be able to turn their tvs off as well as see if they are on without going into their rooms.  

There doesn't seem to be a function for this in the app and it would be amazing if one was created.  Any thoughts on that.