I see that you don't know the legal difference between an interrogation and an interview.
Well, gee willikers, I seem to recall from my THREE YEARS IN LAW SCHOOL that for all intents and purposes there isn't a difference worth mentioning in the context of this thread.
However, since you have admitted to not being an attorney in another post, let me give you some free legal advice:
The test as to whether questioning is illegal isn't whether or not someone is being questioned, but whether or not he or she is being questioned WHILE IN CUSTODY and, further, that it is highly unlikely--if not impossible under current US law--that spending a period of time equal to a recessin a principal's office would count as "custody" for the purposes of determining whether or not a questioning/interview/interrogation was illegal.
It's true that I'm not an attorney, but your mention of interrogation by police with lack of even suspicion did catch my interest. ...helped put down some corruption and other things in the past just to do a good deed.
Do you believe that Sonar5 should sign that administrative form for a California school district without knowing more about the form or what Sonar5 is being told to agree with?
A friend of mine received exceptional assistance from the ACLJ. Without that help, California might have taken her children for no substantially greater reason than vanity about what they perceived to be power in their chosen bureaucratic (and Democrat supported) occupations.