New Delhi, Sept. 1 -- Rajendra Dawadi was inside his classroom when a colleague rushed in with a warning: Floodwaters were racing through Nepal's Trishuli Valley, tearing apart homes, bridges and entire villages.

Then a teacher received another warning by phone. Moments later, a parent arrived to take her child home. The danger had not yet been confirmed, but Dawadi, the principal, had little time to act. He rang the school bell and ordered his students and staff out of the building and toward higher ground.

"I immediately decided to stop . school" and get the children out, he told The Associated Press.

As he followed them to a nearby hill, the floodwaters rose behind him. From the safety of the hillside, he turned to watch the school ...