"welcome to training cadet, I like to think of this place as my home. Now, you would not even think of upsetting me in my home now would you? Of course you would not."
Classic lines from the Mech 2 Falconer commander.
As stated a couple times in the post, a clanner's upbringing is his/her basic training. If you are looking for a practical way to preform this in a game, or even this game, the way I have always worked it is very simple. You have your cadet hopefuls put under the tutelage of one of the middle to senior officers, then they learn clan honor, tactics, phrases and combat maneuvers. Then after that is all set and done, you have a trial of position, just like in classic battletech. Each cadet will have a designated target, if they defeat this target, or one of their fellow cadets, they achieve the rank of mechwarrior. Kill 2 targets, and they are fast tracking, starting as a Star Commander. Now, for those who lose, the Inner Sphere is always looking for new recruits...