CHICAGO — When the air raid sirens began wailing at 4 a.m. on a recent day in Lviv, Ukraine, college student Marta Haiduchok began her day seeking shelter in the basement of her apartment building. More than 12 hours later, Haiduchok, 20, was Zooming in to her online classes at DePaul University, where she is one of 100 Ukrainian students learning alongside their American classmates in the Chicago university’s virtual classrooms. “When the war first started I was super anxious all of the time, and it was hard to concentrate. But in my case, I’m putting so much into my education, my studies ar…
