DCs class have been kept in to miss 5 or 10 minutes of their breaktime on a fairly regular basis recently. DC says this is because there are 2 classmates who are particularly disruptive. The whole class then gets punished because these two particular children aren't quietening down or staying in the line or whatever else is going on.
Last week they were kept back for almost 10 minutes at the end of the day resulting in being late out to the playground to be collected and then this knocked onto an already tight timescale to get DC to their after school activity.
AIBU to think this is grossly unfair?