In sporting terminology, a youth system is a youth investment program within a particular team or league, which develops and nurtures young talent in farm teams, with the vision of using them in the first team if they show enough promise and potential, and to fill up squad numbers in some teams with small budgets. In contrast to most sports in the United States where the high school and collegiate system is responsible for developing young sports people, most football clubs, especially in Europe and Latin America, take responsibility for developing their own players of the future.
Most youth systems attached exclusively to one club are often called youth academies. In a youth academy, a club will sign multiple players at a very young age and teach them football skills required to play at that club's standard. Clubs are often restricted to recruiting locally based youngsters, but some larger clubs such as Arsenal, Real Madrid and Chelsea have recruited foreign talent.