If you are in the United States and need the protection of a court because you have been abused, abandoned or neglected by a parent, you may be eligible for this classification. If SIJS classification is granted, you may qualify for permanent residency (green card).
Some courts will issue these orders even after you are 18 years old. However, if your state does not, the court must have issued the order before you were 18 years old with very limited exceptions.