The South African Schools team remained undefeated in the International Under-18 series after beating England 36-29 at UWC Stadium in Bellville on Saturday.
They earlier in the series beat France in Wellington and Wales in George.
In an earlier match, France and Wales played to a 13-all draw. That means that South Africa were the only team to win three matches. France won one and drew one, England won one and Wales drew one.
England scored five tries to South Africa's three but the five penalties and three conversions by flyhalf Handré Pollard ensured the win. Pollard also scored a try after a credible dummy.
England lost lock Charlie Ewels for collecting two yellow cards in the match.
Pollard opened the scoring with a penalty by England took the lead with a try by wing Josh Watkins. But Pollard scored under the posts, converted and kicked a penalty goal.
England's forwards got the side's second try by powerful Rohan Janse van Rensburg burst through for a try. SA Schools led 20-10 at the break.
England scored their fifth try as the final hooter sounded.
For South Africa:
Tries: Handrè Pollard, Rohan Janse van Rensburg, Sergeal Petersen
Cons: Pollard 3
Pens: Pollard 5
Tries: Josh Watkins, Joel Conlon, Maro Itoje, Tom Stephenson, Zach Kibirige
Cons: Sam Olver 2
SA Schools: 15 Jesse Kriel, 14 Sergeal Petersen, 13 Warrick Gelant, 12 Rohan Janse van Rensburg, 11 Duhan van der Merwe, 10 Handre Pollard (captain), 9 Justin Phillips, 8 Aidon Davis, 7 Jean-Luc du Preez, 6 Thabo Mabuza, 5 Nicholas Janse van Rensburg (vice-captain), 4 John-Dave Schickerling), 3 Dayan van der Westhuizen, 2 Malcolm Marx, 1 Ox Nche.
Replacements:16 Chad Solomon, 17 Pierre Schoeman, 18 Wilco Louw, 19 Gideon Koegelenberg, 20 Akhona Sihunu, 21 Ryno Eksteen, 22 Sandile Kubeka, 23 Jano Venter.
England Under-18: 15 Howard Packman, 14 Nathan Earle, 13 Tom Stephenson, 12 Nick Carpenter, 11 Josh Watkins, 10 illy Burns, 9 Callum Braley, 8 Joel Conlon, 7 Gus Jones (captain), 6 Ross Moriarty, 5 Charlie Ewels, 4 Maro Itoje, 3 Biyi Alo, 2 Harry Thacker, 1 Danny Hobbs-Awoyemi.
Replacements: 16 Alex Lundberg, 18 Zach Kibirige, 19 Sam James, 20 Jake Oldaker, 23 Sam Olver, 24 Ollie Claxton, 25 Nick Tompkins, 26 Stephen Uren.
Referee: Rasivhenge Rasta (South Africa)
Assistant referees: Archie Sehlako (South Africa), Linston Manuels (South Africa)
Assessor: Dennis Immelman
Wales and France drew 13-all at the UWC Stadium in Cape Town.
Wales kicked off and inside 10 minutes, France scored their try when Stephen Parez. Jack Maynard who missed several goalable penalties and two conversions kicked a penalty and the score at half-time was 7-3 to France.
Right at the start of the second half Dafydd Wyn Howells scored a try to give Wales the lead but flyhalf Yohan Le Bourhis kicked a penalty and then a drop for France to lead 13-8. Thomas Ball Wales drew the match with a try for Wales with 11 minutes to play.
Try: Stephen Parez
Con: Yohan Le Bourhis
Pen: Le Bourhis
DG: Le Bourhis
Tries: Dafydd Wyn Howells, Thomas Ball
Pen: Jack Maynard
Wales Under-18: 15 Hallam Amos, 14 Dafydd Howells, 13 Stefan Hughes, 12 Ben Roberts, 11 Ashley Evans, 10 Jack Maynard, 9 Connor Lloyd, 1 Nicky Smith, 2 Ethan Lewis, 3 Nicky Thomas, 4 Josh Helps, 5 James Sheeky, 6 Sion Bennett, 7 James Benjamin, 8 Ben Roach.
Replacements: 16 Tom Ball, 17 Jack Dunning, 18 Alex Jeffries, 19 Lance Randell, 20 Joe Tomlin-Reeves, 21 Joel Raikes, 22 Craig Woodhall, 23 Ryan Evans.
France Under-18: 15 Robinson Caire, 14 Julien Heriteau, 13 Stephen Parez, 12 Paulin Riva, 11 Julien Gardey, 10 Yohan Le Bourhis, 9 Baptiste Serin, 8 Jean-Blaise Lespinasse, 7 Raphael Molcard (captain), 6 Acrobat Camara, 5 Jean-Baptiste Singer, 4 Felix Lamely, 3 Anthony Crochet, 2 Romain Ruffenach, 1 Oleg Ishchenko.
Replacements: 16 Loick Jammes, 17 Rémy Chies, 18 Tommy Raynaud, 19 Adrien Corbex, 20 François Cros, 21 Anthony Meric, 22 Ivan Roux, 23 Nicolas Metge.
Referee: Archie Sehlako (South Africa)
Assistant referees: Daniel Fortuin (South Africa), Manuels Linston (South Africa)
Assessor: Dennis Immelman (South Africa)
South Africa vs France, 17-7
England vs Wales, 28-25
South Africa vs Wales, 24-16
France vs England, 20-13
France vs Wales, 13-13
South Africa vs England, 36-29