In my school I’ve piloted the use of Slack within the Mathematics Department. Primarily we use it for sharing teaching resources. We have a channel for each of the year groups, so that teachers can join the channels for the classes they teach. Another really helpful use we’ve found is for discussion around marking tests. We are often doing these separately at home, and it’s good to be able to chat about the mark scheme and post photos of student answers that we are unsure how to mark.
One of the concerns other teachers have about using a tool like Slack for collaboration is that it’s just another place to check. That concern is legitimate: unless using two different tools offers significant advantages, it’s inconvenient to have to use them in parallel. However, in my experience, collaboration within a subject department is distinct enough from whole-school email that a division between the two isn’t disruptive, and as I’ve argued above, Slack is a significantly more powerful tool for effective collaboration.
While I think Slack works best in teams that work together day to day, it’s interesting to think about how it might work on a whole-school level, and whether it could completely replace email. There are big companies which use Slack, so it does scale to that level. At the high school level, it would need to be organised around subject departments, and since each subject would probably require multiple channels, there would probably have to be some oversight to ensure there was a consistent naming scheme for channels, among other things.
Alternatives to email are becoming widespread in the corporate and charity sector, and it’s about time that schools started experimenting with some of these tools as well. Teaching is a profession where effective collaboration is not always a given, but in my experience sharing ideas and resources with other teachers is one of the most fulfilling parts of the job.