The first trip to Poland for parents whose children attend Wolfson Hillel Primary was described by participants as educational and emotional.
The 18 parents on the two-day programme were led by Rabbi David Mason from Muswell Hill Synagogue with help from the United Synagogue's community services division.
The group's visit included a guided tour of Auschwitz-Birkenau.
Wolfson Hillel parent Nicky Marks, who initiated the trip, said: "The trip was hugely educational, unbelievably emotional and highly inspirational."
The US has previously run Poland trips for its communities and now plans further visits for school parents.
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