The Blue Streaks won, 6-4, to become the first boys' team not from Districts 1 or 12 to win the title.
Abby Walheim and Erin Finley led Villa Maria Academy in the 17-5 win over Kennard-Dale.
On Saturday morning at 10 a.m., the District 1 champion Hurricanes will face District 3's Kennard-Dale at West Chester East in the PIAA 2A girls' state championship.
Senior leadership helps Strath Haven into the PIAA boys' AA lacrosse championship
Margie Carden helped Villa Maria Academy advance to the PIAA girls' 2A finale
Brendan Meagher hopes his 'last ride' leads to PIAA golf for La Salle lacrosse
Friday's big event is to feature the area's top juniors, such as Roman Catholic's Seth Lundy, Bonner-Prendergast's Isaiah Wong, Imhotep's Donta Scott and Abington's Eric Dixon.
The senior scored seven goals in a 16-5 rout of Archbishop Wood in the PIAA Class AA playoffs.
Quinn McCahon and Jack Traynor led the Friars to victory at Cabrini University.
Funston was an assistant under former B-P coach Jack Concannon, who stepped down after last season.
Strath Haven senior Dayo Abeeb wins the District 1 triple jump title