This idea has been merged into another idea. To comment or vote on this idea, please visit K12CO-I-1528 Better sorting/filtering options for relationships in lists, contact cards, directory.
This would allow the most important relationship (parents) of appear first. Now, the relationship most recently added is first.
There should also be a way to run a report so we can easily contact those with siblings to inform them about things going on in the admission process.