Oh OK. Well, the school is called Parsi High School and the principal and others were Zoroastrian.
There is also a megarich Parsi clan called the Avaris who are also Zoroastrian.
So, I think all Parsis in Pakistan are probably Zoroastrian.
About the Khan part, I was quite confused the first time I met a dyed-in-the-wool Gujarati Hindu Indian called Khan.
lol, you know what, when i meet some paksitanis the first time, and when they hear i am from afghanistan, they straightawy think i am pashtoon and they call me khan, both misconception is funny and face it time to time.