I teach Journalism and Computer Science at Jefferson Preparatory High school in Glendale, AZ. I have been using formative for the last two school years.
School year 2017/2018 was my first year teaching, and I taught fifth grade as a long term substitute. My class had access to Chromebooks on Tuesdays and Wednesdays so I made full use of Google Classroom and formative.
This year my school has focused on Office 365, so I am no longer really using Google classroom and instead utilizing MS OneNote and Teams. I am, however, continuing to utilize formative.