In at least one test, the batteries burned hot enough to melt test equipment, according to a person familiar with the results.

WSJ: Dreamliner-Like Batteries Raised Concerns

The most selective schools rank applicants according to their test scores, admitting only the best performers.

ECONOMIST: Grammar schools

To disperse the smoke, the testers boosted ventilation in the cockpit, replacing its air entirely once every minute, according to an FAA report of the test.

WSJ: Dreamliner-Like Batteries Raised Concerns