Final answer:
The duration of a suspension for failing to restrain a child can vary and is determined by the school administration as a disciplinary measure.
Step-by-step explanation:
The duration of a suspension for failing to restrain a child may vary depending on the specific rules and regulations of the school or educational institution. Generally, the length of a suspension can range from a few days to several weeks. It is important to note that the duration of a suspension is determined by the school administration and is intended to serve as a disciplinary measure to address the behavior and ensure the safety of all individuals in the learning environment.