Padawan

Young Padawans in a lightsaber class

A Padawan is an Initiate in the Jedi order, undergoing training as an apprentice to a Jedi Knight or Master.

Young padawans with little training don't leave the Jedi Temple, but older padawans often accompany their masters on missions when their training is deemed sufficient for them to take care of themselves in the field.

Jedi Culture

The Order typically only takes Force-sensitive children at very young ages to become padawans, despite the fact that young adults are clearly capable of learning Force skills and becoming as proficient as any padawan who started learning as a toddler. The preference for young students suggests that the Jedi Order prefers to indoctrinate students with Jedi values from an early age.