"We teach the history of the Holocaust, A to Z, in depth," said Stanlee Stahl, executive vice president of the New York-based Jewish Foundation for the Righteous, one of the organisers of the seminar.
The aim of the seminar is a more effective teaching about the Nazi attempt to eliminate an entire people, said Stahl.
The newspaper quoted Associated Press as saying that the international seminar was "another sign that Croatia has become ready to face its World War II past, when it was a Nazi puppet state that persecuted hundreds of thousands of Serbs, Jews, Gypsies and anti-fascist Croats".
The Tribune wrote that "In the early 1990's, when Croatia was run by nationalist President Franjo Tudjman, authorities often tried to justify crimes committed by its pro-Nazis and school textbooks often omitted or distorted some wartime events".
"The pro-Western governments that took power after Tudjman's death in 1999 have openly condemned Nazism and fascism. New textbooks were printed and teachers are encouraged to devote additional time to teaching about it, beyond mandatory lessons on the subject," wrote the newspaper.
It added that "The issue, however, remains sensitive, and some Croats still play down the wartime crimes".
Asked whether young Croats, who grew up in the 1990's, have a distorted view of the Croatian role in the war, Helena Strugar, one of about 25 teachers at the seminar, said they were a minority. "But they also can be turned around," she said. "When we explain it to them, they understand."
The Jewish Foundation for the Righteous cares for non-Jews who helped rescue Jews from the Holocaust and received the Medal of the Righteous from Yad Vashem, Israel's Holocaust Museum, the International Herald Tribune wrote, adding that of about 22,000 non-Jews who received the medal, 105 are Croats.