All four teams who opened the Gillette Cup Finals with victories completed wins on day two of the competition in Palmerston North.
In Pool A, joint holders Tauranga Boys' College claimed a three-wicket win over Rathkeale College.
Doug Bracewell struck 60 for Rathkeale, who posted a a respectable team total of 184.
Tauranga scored 185/7 in reply, with an innings of 73 by Matt Golding providing the backbone of the successful chase.
King's College compiled an eight-wicket win over Otago Boys' High School, New Zealand Under-19 bowler Tim Southey taking three wickets as the southerners were dismissed for 77.
Kings knocked off the required runs in 15 overs for the loss of just two wickets, with Kai Petersen and Andrew de Boorder both carrying their bats.
In Pool B, Christchurch Boys' High School, the other joint holder, was a 200-run winner over St Patrick’s College.
Captain Brendon McFarlane  and Tom Latham  which set the basis for a very competitive score of 277/6.
St Patrick's College were put under pressure initially from left arm quick bowler Corey Anderson, medium pacer Alex Rowe and offspinner Henry Nuttall, eventually succumbing in the 28th over.
Another Chad Law half-century helped Palmerston North Boys' High School fight out a three-run victory over Hamilton Boys' High.
Law made 57 as Palmerston North was removed for 153.
Steve Martin (68) and Brad Perrett (41) helped Hamilton to 150/7, but off-spinner Scott Robson claimed wickets with the second and third balls of the last over, before a run out three balls from the end of the allocation gave Palmerston North victory.
Rathkeale: 184 [Doug Bracewell 60, Simon Clinton-Baker 32; Daniel Abricossow 3/27, Peter Drysdale 2/21, Kane Williamson 2/22]
Tauranga BC: 185/7 [Matt Golding 73, Josh Evemy 37, Bharat Popli 23, Kane Williamson 22; Doug Bracewell 3/27, Andy Dodd 2/33]
Result: Win to Tauranga Boys' College by 3 wickets
Otago BHS: 77 [Tim Southey 3/18, Chris Goldsbury 2/16, William Brittain 2/21]
King's College: 81/2 [Kai Petersen 30*, Andrew de Border 24*]
Result: Win to King's College by 8 wickets
Palmerston North BHS: 153 [Chad Law 57; Bradley Perrett 3/25, Anurag Verma 2/25]
Hamilton BHS: 150 [Steve Martin 68, Brad Perrett 41; Scott Robson 2/30]
Result: Win to Palmerston North Boys' High School by 3 runs
Christchurch BHS: 277/6 [Brendon McFarlane 73, Tom Latham 49, Corey Anderson 33, Tyler Bleyendaal 37; David Houghton 3/40]
St Patrick's College: 77 [Henry Nuttall 4/20, Corey Anderson 3/16, Alex Rowe 3/21]
Result: Win to Christchurch Boys' High School by 200 runs