The Western Cape, inspired by SACS and Stellenberg High, dominated the Cape Schools Week, winning six and drawing one of the 10 matches.
Queens College were the only unbeaten Eastern Cape side.
SACS, who have only lost once this year, came from behind in the final minutes to win both their matches against Selborne (17-13) and Grey High (20-18).
Queens edged Wynberg Boys High on day one and completed the tournament with a 22-19 victory against hosts Rondebosch Boys High.
Stellenberg were never troubled against Muir College (40-10) and were always in control in beating Dale College 22-7.
Boland Landbou, who lost by a point to Grey High (18-17), were too strong for Muir College (47-0) on the final day.
Cape Schools Week results
- SACS 20 Grey High 18
- Stellenberg 22 Dale College 7
- Wynberg 20 Selborne 19
- Boland Landbou 47 Muir College 0
- Rondebosch Boys High 19 Queens College 22
- Wynberg Boys High 22 Queens College 24
- Stellenberg 40 Muir College 10
- Boland Landbou 17 Grey High 18
- SACS 17 Selborne 13
- Rondebosch 27 Dale College 27
All matches can be viewed on SchoolSportLive YouTube channel