If you work in Irvine, then you will either have to take the 15S to the 74W to the 5N to get to work. An alternative would be the 91W to the 241S (tollroad) to the 133S (tollroad). Another option would be the 91W to the 57S to the 5S.
But you were asking about schools. Right now, there is still debate over whether or not to even open the schools, so whatever on-line services seem better (and I don't know how you would make that judgement), is where I think you could register your kid(s) -- just have them log in from wherever and never tell anyone where they actually are.
Here is something else to consider: Most of Orange County seems to be more progressive than most of Riverside County, insofar as education is concerned. Racism is also more openly expressed in Riverside County, while racism in Orange County is more subtle and pervasive. That might have a lot to do with the former being mostly working-class and the latter being more affluent.
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.