Joanna Skoczek made the statement in a speech to the UN body on Thursday, Polish state news agency PAP reported.
The Security Council convened to discuss the situation of children following Russia's aggression against Ukraine, officials said.
Poland making 'every effort' to help refugees from Ukraine
Skoczek, Poland’s deputy permanent representative to the UN, told the meeting that “more than 3.3 million people, mostly women and children, have crossed from Ukraine,” seeking refuge in her country.
“Poland, both as a state and a society, is making every effort to meet their needs,” she declared
200,000 refugee children in Polish schools
Skoczek told the UN Security Council that “some 200,00 refugee children from Ukraine are in Polish schools … 20 percent of them attend preparatory classes and 80 percent attend regular classes with Polish children.”
In addition, "an online platform offering free educational tools was created,” she said.
Skoczek added that “in times of war, classrooms should provide children with a sense of stability and act as a safe space to learn.”
She condemned Russian attacks against Ukrainian civilians and civilian infrastructure, such as schools, hospitals and orphanages, stressing that "the perpetrators must be held accountable."
Poles 'doing best they can' to help Ukrainian children
Skoczek also stated that “the Polish people are doing the best they can, offering children from Ukraine safety within their homes and families, and a normal life, with its duties and joys.”
“We hope we are able to save at least part of their dreams, and their childhood,” she concluded.
Russians killing children in Ukraine: UN
Meanwhile, Omar Abdi, deputy executive director of the UN Children’s Fund (UNICEF), told the Council that according to UN data, nearly 100 children have been killed in Ukraine during the last month alone.
He added: “We believe the actual figures to be considerably higher.”
Schools "continue to be attacked and used for military purposes,” Abdi said, adding that the war in Ukraine, "like all wars, is a child protection and child rights crisis.”
Friday is day 79 of the Russian invasion of Ukraine.
Poland on Friday reported it had welcomed nearly 3.34 million refugees fleeing Russia's war on Ukraine.
Source: PAP, un.org