There's no such think as a 5ths comp. And they play other school's 4ths because TAS 1sts play in the Newington spot in the 3rds. TAS 2nds play other school's 5ths. And there's no 4ths comp either. Joeys were one of the main proponents of changes introduced because they didn't want their 3rds going to Armidale and they found it was more difficult to arrange multiple buses to different venues because they had many more teams than Newington. (See discussion on the thread the year before the reversion to a one round competition) You've made an assumption that the change was (a) requested by Newington and (b) is of some advantage to Newington when neither is correct. In fact having to play other school's 4ths is a huge disadvantage for the Newington 2nds because reserves and players moving up to cover injury go from playing against 4th teams to playing against 2nds teams which is a huge jump. If Newington play 3rds, then other things have to change as well. And it would a significant number of unmatched fixtures for Joeys and Riverview in particular and introduce a bye into the 3rds competition or one of TAS, Grammar or High would have to leave the 3rds competition. A 9 week 3rds competition doesn't work with a 5 week 1sts competition, it only works with a 10 week two round firsts competition.