Jon Platt, who now faces a £1,200 fine or three months in prison, took on the talkRADIO host as their locked horns over the over term-time holiday ruling.
Mr Platt said: “Here is the thing Julia if you saw evidence that taking your child on a term-time holiday improved their educational outcome, would that be the right thing to do?
“Or is it just the statistics, the percentage that matters?”
Having none of it, Hartley-Brewer replied: “Two answers to that; Disney World isn’t an educational holiday however you want to put it and that holiday could happen – if you can afford court cases up to the Supreme Court, you can afford to take your kid out during normal holiday those 13 weeks a year.”
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Julia Hartley-Brewer and Jon Platt locked horns over term-time holiday
“What you’re missing again is that I have three children in two different schools, they have different term times,” the dad fired back.
“I could either have two miss a week of school or one miss a week of school, I chose the one.”
The discussion turned heated as they disagreed what impact it had on other children in the class when one was taken out of school for a mid-term holiday.
The radio host insisted: “That teacher is spending time with your kid because they were in Disney World, they are not spending time with my kid.
Disney world isn’t an educational holiday
“I don’t see how any research paper could possibly show that’s not going to have a detrimental impact on my child.”
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And as Mr Platt said: “So what you want to do is just assume that must be true,” the host snapped: “How can it not be true?”
Resulting in the dad saying: “Because everybody used to believe the world was flat until they realised it wasn’t.
“You’re a ‘world is flat’ person, because evidence shows otherwise. And unless you have that evidence, is it reasonable in the absence of evidence to take this position.
“If you wake up tomorrow Julia, in all seriousness, and you look at your child and think ‘god, you look exhausted sweetheart, I’m keeping you at home today’…”
Live pictures: Jon Platt supreme court ruling Thu, April 6, 2017
Jon Platt took his daughter out of school without permission for a seven-day trip to Disney World, Florida. He was fined for doing so and later prosecuted by the Isle of Wight council for refusing to pay the £120 penalty. But local magistrates found there was no case to answer, and the council took its case to the High Court in London
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Jon Platt arrives at the Supreme Court in central London with his wife Sally where the Court will rule on the much-anticipated legal case on an unauthorised holiday during school term time
Cutting him off, Hartley-Brewer said: “There is not a chance in hell I would ever do that. Absolutely not!”
Speaking after the landmark ruling also attended by his wife Sally, Mr Platt said he was "not at all surprised" to have lost, adding that schools now need to think "very carefully" about absence rules.
He said: "I followed the law precisely as laid down by High Court judges in 2006 and 1969.
Describing the decision as "shocking" he said the decision meant: " to attend regularly no longer means frequently. It now means to attend all days and all the times the school requires it".