The ronin mechanics in the L5R 4th Edition RPG are designed to reflect the unfortunate reality of a wave-man’s life - namely, most ronin bands are only around for a short time, and are unable to develop more than one Technique. Even the rare ronin groups that manage to endure for a long time or gain prestigious support, such as the Legion of Two Thousand, are hard-pressed to establish the sort of infrastructure and long-term continuity required to maintain a full-fledged bushi school. The game design reflects this with a system which forces most ronin to rely chiefly on their innate capacities (represented by Skills) with only one or two Techniques.
Although this approach is realistic for the setting, it does put ronin significantly behind clan characters (even Minor Clan characters) in terms of their game-mechanic capabilities. This can be frustrating for players who are running ronin characters. GMs who wish to mitigate this frustration can opt to make this “generic ronin school” available for play. Although a “generic” school does not really fit the concept of what schools are supposed to represent in the world of Rokugan, it does allow greater options for players, which is a virtue in itself. GMs can thus have the freedom to decide whether they wish to focus their campaigns more on setting authenticity at the expense of game-balance, or more on game-balance and maintaining fairness between players.
Although this school is intended primarily to represent ronin, it can also be used to represent any other situation in which a character could have martial training without access to a “named” bushi school. For example, it could represent the training of Great Clan samurai who belong to minor vassal families without access to their clan’s main dojo. It could also represent Minor Clan samurai in clans like the Fox, Dragonfly, Oriole, or Bat who have bushi in their ranks but lack any bushi school of their own.