Nonetheless, Collegiate replied just a minute later through an intercept try to Stephen Perofeta, converted by Jack Lupton. Grammar maintained their composure and through a well-worked rolling maul from a lineout drove over for the equaliser.
The Sydney team were willing to get the ball wide while Collegiate were struggling with their execution come halftime.
Given the "stern words", Collegiate's improvement was immediate as they played with far more aggression and began to put the structure together come the second stanza.
Tighthead prop James Fisk crossed over - after some good mauling by three of the forwards - to regain the lead.
Ollie Paine rounded off a good move to score between the posts, with Perofeta adding the extras.
Touzel said WCS started to dominate in the last 15 minutes and were unlucky not to score on several occasions. Good defence from Grammar's loose forwards held Grammar at bay.
Hooker Joe Edwards, named Collegiate's player of the day, eventually broke through for the fifth converted try.