"I think the guys turned it on a little," said acting Collegiate coach Barry Touzel.
Once the backline got over the biting cold weather, with temperatures plummeting to 7C, they capitalised on the platform the forward pack were laying down.
"They started cutting them to pieces and putting some phases together.
"[Daramalan's] forwards were physically strong ... they slowed the ball down.
"When we sped it up, they were a yard or so slower than us."
Hooker Nick Cave scored a hat trick, while Ruslan Casey was moved from the wing into flanker and grabbed a double. He was also named man of the match by Daramalan.
The Act school were third in their competition, although Collegiate knew little about them before they lined up.
The team were visiting the Bradman Museum yesterday, before heading back to Sydney for their final game against Sydney Grammar tomorrow.