Students attend a special session for Ukrainians to learn the Polish language, during the first day of school in Warsaw, Poland, Monday Sept. 2, 2024. (AP Photo/Czarek Sokolowski)
Sava Trypolsky, a 7-year-old boy from Ukraine, shows off soccer medals in his room in Jablonna, Poland, Friday Aug. 30, 2024. (AP Photo/Vanessa Gera)
Sava Trypolsky, a 7-year-old boy from Ukraine, looks at a picture depicting Barcelona soccer players, in his room in Jablonna, Poland, Friday, Aug. 30, 2024. (AP Photo/Vanessa Gera)
Children perform on the ceremonial first day of school in Warsaw, Poland, on Monday, Sept 2, 2024. (AP Photo/Czarek Sokolowski)
Krzysztof Obrebski, vice principal of the No. 31 high school in Warsaw, speaks to the Associated Press as he prepares to welcome 60 new Ukrainian students to his high school of 750, in Warsaw, Poland, Friday, Aug. 30, 2024. (AP Photo/Czarek Sokolowski)
Children on the ceremonial first day of school in Warsaw, Poland, on Monday, Sept 2, 2024. (AP Photo/Czarek Sokolowski)
Children gather for the ceremonial first day of school in Warsaw, Poland, Monday, Sept 2, 2024. (AP Photo/Czarek Sokolowski)
Sava Trypolsky, a 7-year-old boy from Ukraine, looks at his favorite comic book, which depicts World War II in Poland, with his mother Oksana Trypolska, in his room in Jablonna, Poland, Friday, Aug. 30, 2024. (AP Photo/Vanessa Gera)
Sava Trypolsky, a 7-year-old boy from Ukraine, holds up school supplies with his mother Oksana Trypolska, in Jablonna, Poland on Friday, Aug. 30, 2024. (AP Photo/Vanessa Gera)
Yana Kudina, a Ukrainian teacher who gives Polish language to Ukrainian refugee students, greets her class on the first day of school in Warsaw, Poland, Monday Sept. 2, 2024. (AP Photo/Vanessa Gera)
Children on the ceremonial first day of school in Warsaw, Poland, on Monday, Sept 2, 2024. (AP Photo/Czarek Sokolowski)
A Polish student walks in the hall of a school attended by Ukrainian students on the first day of school in the No. 361 school in Warsaw, Poland, Monday Sept. 2, 2024. (AP Photo/Czarek Sokolowski)
Children gather for the ceremonial first day of school in Warsaw, Poland, Monday, Sept 2, 2024. ( AP Photo/Czarek Sokolowski)