In Ukraine’s Kharkiv, 20,000 children go underground to study

Kharkiv, Ukraine – Maksym Trystapshon takes the subway to work. But the school head teacher and English teacher from Kharkiv, Ukraine’s second-largest city that sits only 40km (25 miles) from the Russian border, does not need to leave the subway station to see his students.

His school is right inside the Oleksandr Maselsky station on Kharkiv’s southeastern outskirts, a stone’s t...