A full review of Mini Footy (now 6 to 9 years) and Mod League (10 to 12 years) was undertaken by the NRL in partnership with a Sydney University Research Team, where trial data was analysed during the period 2009-2014.
"Feedback from players, coaches, parents and Referees indicated that fun, skill development and increased participation were key factors in recruiting young players and then retaining them in the game for longer," said NRL Head of Football Todd Greenberg.
Experimental laws were trialed across Australia over the five years resulting in changes to commence in 2015. These include:
• the elimination of scrums in the Modified Games;
• the clarification of the place / tap kick re-start to the non-scoring team across the 6 – 12 year age group;
• the standardisation of the Zero Tackle across "the whole of game";
• the elimination of conversion attempts in the 6- and 7-year age groups to generate more performance time in these formative years;
• the introduction of a "Chance" rule in the Under 6s; and,
• a "Two Pass Variation" law for Mod League participants.