In group settings, swings are considered to be for preschool children.

The answer to this question is unsafe
The only way for the usage of swings could be considered as 'safe' for children are only if there is an adult that supervise the usage of swings.
In group setting, children often become really reckless and might push the one on the swing, causing them to fall from the height that might cause fatal injuries

Idont even know bro