Team 4020 has been using slack for the entire 2015-2016 season and so far we love it. Slack helped to replace google hangouts, group texts and massive email chains. I agree that the largest challenge was to get students to regularly check slack but after everyone downloaded the slack app to their phone checking slack was no longer an issue. The other problem that we had with slack is that the company that almost all of our mentors work for blocked the use of slack on there work network, but with the app installed on their phones this issue was resolved. Over all I would rank slack 8.5/10 stars
Thomas J
Operations Director
DB Cyber Tribe
Team 4020
www.DBCyberTribe.com