Bulk editing groups
1. Log in to the Google admin panel first.
2. Use the following URLs to reach the "all members" list of each parent group:
https://groups.google.com/a/crossroadsacademy.org/forum/#!managemembers/k.parents/members/active
https://groups.google.com/a/crossroadsacademy.org/forum/#!managemembers/1.parents/members/active
https://groups.google.com/a/crossroadsacademy.org/forum/#!managemembers/2.parents/members/active
https://groups.google.com/a/crossroadsacademy.org/forum/#!managemembers/3.parents/members/active
https://groups.google.com/a/crossroadsacademy.org/forum/#!managemembers/4.parents/members/active
https://groups.google.com/a/crossroadsacademy.org/forum/#!managemembers/5.parents/members/active
https://groups.google.com/a/crossroadsacademy.org/forum/#!managemembers/6.parents/members/active
https://groups.google.com/a/crossroadsacademy.org/forum/#!managemembers/7.parents/members/active
https://groups.google.com/a/crossroadsacademy.org/forum/#!managemembers/8.parents/members/active
3. For a given group, click the first checkbox to select all, then click the minus sign:
4. To paste a list of new members, click "Add members":
5. Paste:
Repeat for each list.
As of July 2019, the all parents list ("parents@crossroadsacademy.org") is a list of the class lists, so it should never need direct editing again, other than to add managers (our own staff) who need to be able to post.