"I was about 10 metres behind them on purpose. The whole point was to see the response it would gather, we wanted it to be raw and real."
After talking to the girls in class today about their experience Mr Tereu is convinced it was a worthwhile exercise.
"We explained how it must've been for real in America in the 50s and 60s when it was reversed.
"It's been just magnificent, just the high-level questioning that it has encouraged.
"The girls were nervous, they thought it was going to be scary and it was scary. But now they want to take their studies to the next level, they want to find out about Elizabeth Eckford and Rosa Parks and all these famous people.
"In terms of what I was trying to do, making them think, getting them outside their comfort zone, for sure it was bang on what we would hope would've happened."
He said the feedback he has received has been overwhelmingly supportive, including from the senior management at the school.
"It's been really really positive once we explained what we wanted to do. The only negative comment I've received was that there's got to be a better way of teaching history, but the point was to envoke that anger and passion and recreate that stuff that the real people would've gone through."