Tomorrow at the WCS turf, Collier will take his place among some star-studded names for the women's and men's invitation matches.
Spokeswoman Kathy Norman said they were delighted to bring so many former champions of the school and region to show off their skills.
"We opened it up and particularly wanted to bring back Central Districts players of note," Ms Norman said.
"There's ex-Black Sticks, Junior Black Sticks, Central NHL, distinguished Old Boys and current players of the First XI."
Alongside Collier in the men's game will be former Black Stick and famous drag flick specialist Hayden Shaw, along with Junior Black Stick wider squad member Martin Atkinson.
The women's game includes former Black Sticks such as Caryn Paewai (148 caps), Skippy Hamahona, Anna Symes and Michaela Curtis.
Joining them is Anna Symes' sister Pip and Bre Wiig, Junior Black Sticks.
Norman said they had also invited the current Black Sticks from the Central Districts - Kayla Sharland, Emily Naylor, Shea McAleese and Nick Wilson but they were unable to come following overseas tournaments.
Following the invitation games tomorrow morning - starting at 10am and 11.30pm respectively - the WCS turf will be officially opened at 12.30pm.
During the afternoon there will be a 7-a-side Inter House tournament involving both current members and alumni.
"There will be plenty of house rivalry," said Norman.
The winner will receive a trophy at 3.45pm.