The jet seats 525 people in three classes.
"I separate them in three classes," he said.
Organizers expect more than 60 boats competing in three classes (anyone can enter).
The fossorial vertebrates are found in three classes: amphibians, reptiles, and mammals.
It will fly Boeing 757 jets with 110 seats in three classes -- first, business and economy-plus -- replacing Boeing 767 jets on the routes that had been outfitted with 168 seats in three classes.
He said Virgin planned to operate its A380's with a maximum of 524 seats in three classes.
"It was one of those aha moments," said Mr. Guardia, who is tracking 70 students in three classes.
"What happens," she said, "is that five kids leave in three classes, and it's not enough to combine two classes and lose a teacher.
In three classes — elementary statistics, college algebra and introduction to programming — a higher share of online students than on-campus students passed with a C or better.
For international competition, under supervision of the Fédération Internationale Motocycliste, motorcycles are grouped in three classes according to engine-displacement limits of 125, 250, and 500 cubic centimetres.
Known as the "Triple Seven", it can carry more than 350 passengers in three classes and its longest-range version can fly more than 10,000 miles.
