We can be fairly certain that there is noone at High on a sporting scholarship.
SBHS certainly used to have a couple of 'Headmaster's Discretion' places for year 11 and 12 to replace kids that had left along the way. I am certain that in the past they have recruited some pretty good rugby players who wouldn't have made it based on academic results alone.
If the competitions become much more unbalanced in future years they could look at combining the CAS and GPS rugby competitions into a 1st and 2nd division.
1st Div:
Newington
Joeys
Kings
Waverley
Trinity
2nd Div:
High
Grammar
Aloys
Cranbrook
Shore
I'm not sure where the current results sit but you obviously slot in Riverview, Scots, Barker, Knox depending on their strength. You then run a promotion/relegation system.
Whilst it would break with a lot of tradition, it would create two better rugby competitions.