Preston Curtis caught an 80-yard pass from Isaac Valles on the first play after the kickoff and East never looked back.
"We smacked them in the mouth right from the start," said East running back Ula Toluta'u, who had 121 rushing yards and three touchdowns. "We've been planning this game since March. As soon as the Alta game was over [last week], we were all about this game."
Kahuku (1-2) won the Haka battle in a pregame ceremony that featured fireworks and a smoke machine, but the Red Raiders weren't better once the opening whistle blew.
Toluta'u scored two first-quarter touchdowns on 2- and 6-yard runs as the Leopards jumped ahead 21-0. He added a 27-yard score in the third quarter, and had a potential fourth score called back by penalty.
Valles was only asked to throw eight times, and he completed four for 129 yards and the long TD to Curtis.
"We saw something in film from Kahuku's first two games that made us think we could go deep early," East coach Brandon Matich said. "We decided late last night we would try it on the first play."
The Leopards didn't need to throw much after that, not when the sprint sweep proved so effective. Four ball-carriers rushed for 15 yards or more, including Valles, who gained 64 yards on the ground.
The atmosphere was electric in the pregame, with both stands filled to capacity. The school announced the standing room-only crowd was the largest in East history. The Red Raiders had several hundred supporters on the stadium's east side.
"Kahuku has very good fans, very loyal, very generous," Matich said. "They have a good following, and I thought we'd have as big a crowd as turned out."