The French junior teams have become very competitive in the last few years. Their u/18 team was unbeaten at the 2018 International Series hosted in South Africa while they are current u/20 Six Nations and World Championship champions.
The main reason according to the current crop of u/20 Six Nations squad is the similar game plan followed from the u/17 national age group up to the senior side.
Matthis Lebel confirmed that from the age of 17, they learn the basics of the national game plan. This makes easy for the players to advance to the next age level without any problems. "The voices may change but the game plan never does".
Players do not need to adapt when arriving for training camps with training starting immediately, saving time and making the next step-up so much quicker and easier for the next generation of stars.