Marist will meet RKS in the Coke Zero Deans final after 37 years.
The last time the two schools met in the Deans final was back in 1978 where they drew and shared the trophy.
Marist beat defending Deans champion Lelean 20-13 while RKS beat Ratu Navula College 17-10 over the weekend.
Marist came from behind in the second half to beat Lelean as they scored through their forwards Kaliopasi Uluilakepa, Lionel Monua and Josh Rogoimuri.
Meanwhile, RKS looked confident in their game against Ratu Navula with their star fullback Nailati Ukalele expected to play a big role in the final with his super boot.
Ukalele kicked four penalties to book his team a final spot this weekend.
The Coke Zero Deans finals will be held this Saturday at the ANZ Stadium.
You can catch the live commentary of the Marist vs RKS Under 18 final on our sister station, Viti FM.
