Jenna Bike scored three goals to fuel the St. Joseph High girls soccer team’s 6-0 rout over Rocky Hill in the Class M semifinals at Municipal Stadium in Waterbury on Saturday night.

“She’s been very good for us all year,” St. Joseph coach Jack Nogueira said. “I thought she was tremendous today.”

The sixth-seeded Cadets (18-2-2) will face unbeaten Northwest Catholic (18-0-1) in the state final at 6 p.m. on Friday at Municipal Stadium.

Last season, Northwest defeated the Cadets 4-1 in the semifinals then went on to win the Class M state title with a 4-0 triumph over Granby Memorial.

Julia Marino, Katie Danaher and Leah Lewis added single markers for St. Joseph, which opened up a 2-0 halftime advantage and never looked back.

After claiming a rousing 4-3 victory on the road against third-seeded Suffield on Wednesday, the Cadets came flying out of the gates on Saturday against the Terriers (14-4-2).

“The last half of Suffield and today, we were fantastic,” Nogueira said.

Lewis set up Bike’s first marker in the 31st minute, before Bike drove a cross into the penalty area with 2:47 left in the first half.

Marino latched onto the header and rocketed it past Terrier keeper Bryanna Montolvo, arming the Cadets with a 2-0 halftime edge.

With 34:44 left to play, Bike picked her way through the Rocky Hill defense, then popped a shot over a diving Montolvo, making it 3-0.

The freshman ace finished off the hat trick with 24:45 left, before Lewis and Danaher fired in goals to complete the blowout.

“They put up a good fight,” Danaher said. “We put in our opportunities.”

Rocky Hill struggled to get anything going offensively, as the Cadet defense of Alexandra Waizenegger, Cori Scales, Sabrina Toole and Rachel Barroso, with Danaher tracking back from the midfield, locked the Terriers up.

St. Joseph keeper Molly Meehan needed to make just one save to record her third shutout of the state tournament.

“We really came together as a team and learned to use what we had on our team better than we did at the beginning of the year,” Danaher said.

St. Joseph will be looking for its third state title after winning back-to-back crowns in 2007 and 2008.