How to Make a Private Group Public On Facebook
If you are admin of a facebook group and want to make it public, there is an easy way to do so. All you have to do is change the privacy settings on your group. The new settings will make your group visible to anyone on facebook who searches for groups on the platform. This will allow you to advertise your group and get more members without violating the privacy agreement with existing groups members.
However, if you do decide to make your group public, you must be aware of some of the ramifications that may come along with it. For one, if you make your private group public, anyone can see the discussions and information posted by members of your group, including photos. This could lead to a lot of misunderstandings and problems. This is why it is important to take the time to carefully weigh the benefits and consequences of making your group public before you do so.
In addition, once a group is made public, it cannot be changed back to private. This is in part to protect group member privacy but also to prevent growth hacks such as those seen on Instagram, where meme accounts are often changed from private to public in order to artificially boost their follower numbers.