Jan Botha, the coach of De Aar Secondary School in the Northern Cape, has been given a six-month suspension for fielding overage players in a school fixture.
Grey College have finished the 2014 season as South Africa's top-ranked schools team.
Bishops beat their arch rivals 22-21 in their Premier Interschools clash.
Bishops ended their season with a hard-fought 22-21 win over Cape Town southern suburb rivals Rondebosch at the Piley Rees on Saturday.
Nelspruit's one-point victory against third-ranked Garsfontein moved them into the top half of the FNB Top 20 for the first time this season.
The SA Schools team suffered their first defeat in four years when England beat them 30-22 in Stellenbosch on Saturday.
Boland Landbou beat Oakdale Landbou 13-7 in a thrilling Mutual & Federal Premier Interschools encounter on Saturday, while Grey College pipped Paul Roos 25-20.
Curwin Bosch will start at fullback for SA Schools against England in Stellenbosch on Saturday.
KwaZulu-Natal rivals Glenwood and Hilton College will no longer meet on the rugby field.
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Wales and Cardiff Blues prop, Adam Jones, demonstrates the art of the drop goal.View all videos