But over a third of the graduates from its physics department have left the country since the late 1980s, more than 500 of them to the U.S. Atrocious housing is not the only reason they have chosen not to make a career in teaching, but it adds to the self-doubt of those who have stayed behind.

CNN: PLENTY OF ROOM FOR IMPROVEMENT

But when she found a longer-term spot at a school in Brooklyn's Cobble Hill, she said she saw some atrocious teachers.

WSJ: City Moving to Strengthen Teacher Pool