At least on the northern side of scripps ranch, near scripps poway pkwy (aka “new scripps” or “Miramar Ranch” or “Scripps ranch villages”) feeding Dingeman & EBS schools, I see a lot of young kids.
Unscientifically, there might be 10% kids in my son’s KG class that are from outside SR. However all of them live on the other side of 15, in Mira Mesa/Sorrento Mesa. I have met some of these parents and I am not concerned about them attending SR schools.
Not sure of the situation in Jerebek, MRE, Marshall or SRHS schools. Maybe the “old” scripps ranch is getting “older” and this is a bigger issue at middle school/ high school levels.