While Trident looked confident chasing down the runs, they were made to work for the victory losing seven wickets on the way.
Trident's master blaster Pip Thickpenny, who finished the First XI competition as the leading run scorer, was a rock at one end and was rewarded with his side's top score of 79 not out.
Bethlehem bowlers Dylan Wadsworth (3/22) and Chase Raleigh (3/34) toiled well with the ball to trouble the victor's batsmen but Trident hung tough to win the prize with three wickets to spare.
WBOPCA Secondary School 1st XI Final:
Bethlehem College 169 (Bede Murray 60, Mitchell Fairweather 39, Tom Rutherford 25; Cameron Lee 3/22, Hamish White 3/28, Pip Thickpenny 2/42) lost to Trident High School 173/7 (Pip Thickpenny 79no; Dylan Wadsworth 3/22, Chase Raleigh 3/34).