A strong group of Hamilton Boys' High School supporters made the trip to Rotorua yesterday to get behind their side.
The cow bells were ringing right around the park as the defending champions defeated Christchurch.
In the co-ed schools' top four, also played in Rotorua, Feilding High School and Cambridge High School will meet in the final tomorrow at 1.10pm, after winning one-point thrillers.
Feilding defeated Otahuhu College 14-13 yesterday while Cambridge High School defeated St Kevin's College 15-14.
Results:
Scots College 39 (Malo Tuitama 2, Alex Fidow, Henry Mexted, TJ Va'a tries; Va'a 4 con, 2 pen) defeated Auckland Grammar School 22 (Shaun Stevenson Sam Ulufonua, Callum Otway tries; Wiseguy Faiane 2 con, pen)
Hamilton Boys' High School 20 (Viliami Tuipulotu, Nicholas McCurran, Samuel Toa tries; Matt Lansdown pen, Shanan Tomuri con) defeated Christchurch Boys' High School 19 (Cameron Hay 2, Jim Smith tries; Alex Nankivell 2 con).
National First XV rugby final:
Scots College (Wellington) versus Hamilton Boys' High School, Sunday 2.55pm at Rotorua Boys' High School.