I've said this before but even if it's just the helicopter parents who make the difference in "schooling"... that still makes IUSD better than other hoods.
You want your kids to hang out with kids who have parents who care about education... now... that's not always the case in Irvine... there are some schools that have a percentage of parents who really don't care... but that's an exception because most Irvine parents are paying a premium for their homes thus they need to make sure they are getting some value out of it.
This puts Lake Forest in the sandwich category... either parents with young children who are not in Elem/Middle/High or parents who have college kids where local school rating becomes less relevant.
We lived in South County before kids... more because my wife didn't want to live in Irvine... but once we started a family... guess where she wanted to move?
The funny thing is... I think we are the parents who aren't the Tiger ones pushing for that Ivy education. so I guess we bring IUSD down.