Is it legal to go 160 mph in a school zone?

maybe you could try it and find out.

Yep. The fine would be about $3000 and you'd lose your license for at least 5 years.

I suppose it would depend on how far you drive.  That's a serious answer, by the way.  There was a comic who used to joke...

Cop pulled me over the other day and asked me, "Do you know the speed limit is 55 miles per hour?"  

"Yeah, but I wasn't planning to be out that long."

That is a joke.  Now for an example from REAL LIFE:

About 20 years ago, I was pulled over for speeding in Boston.  45/30 or something like that.  I looked up the specific law I was charged with, and it was worded where you were guilty of speeding if you drove a certain speed *OVER A CERTAIN DISTANCE*.  I don't remember the exact distance, but I think it was like 1/4th of a mile.  Now, the interesting thing is....when I was pulled over, I was on a road that was less than 1/4th of a mile long.  I was basically on a small segment that connected one road to another.  The speed limits on the other roads were both higher than the speed I was accused of driving.  Therefore, the way the law was written...it was not possible for me to be guilty of speeding.  By the time you gathered enough evidence to say that I was speeding (which did not happen)...I would have been in a speed zone with a higher limit anyway.

I argued it to the magistrate in a preliminary hearing.  The magistrate thought I was crazy, but only because he didn't bother to listen when I explained the law to him...and he was unfamiliar with the specific law I was charged with.  So I had to go talk to the judge.  The judge DID know the law.  And when I presented a diagram showing the area I was accused of speeding, it was clear that it was not possible for me to be speeding in that area.  The judge tossed the ticket, as the road I was on was TOO SHORT for that specific speeding law to apply to.

The lesson here?  It's good to familiarize yourself with any law you are accused of violating.  Sadly, the cops who enforce those laws are often ignorant of the laws that they are enforcing.

You ask if it's legal to go 160 MPH in school zone?  I don't know.  I'd have to look up the specific law for that area, as well as study the specific road or section of road.  Most likely, it would be a violation of some sort.  But you'd be surprised how often the law doesn't address specific situations.

Another example:  When I was in truck driving school, my instructor bltched me out for running a stop sign.  I told him that I violated no law by doing so.  That lead to a very heated argument.  But I was right.  The stop sign (that I didn't even slow down for) was on private property, in the middle of a large parking lot.  State law stated "we leave it up to counties and cities to enforce driving regulations on private property".  The specific county and city where I ran the stop sign had NO LAW in force related to driving regulations that applied to driving on private property.  Therefore, the stop sign might as well have not existed, as there was no law compelling anybody to obey it.  It was a traffic control device with no actual authority to control traffic.

Not unless it's the School of Regrettable Decisions.  Any speeding in a school zone isn't a good choice and it can result in huge fines.  

Depends on the school but probably not