(CBS) - The 12 boys rescued from a cave in Thailand are reported to be feeling better Thursday morning. The boys and their soccer coach have been hospitalized since their 18-day ordeal ended earlier this week and are expected to spend at least a week at the hospital, followed by 30 days at home.

The British divers who found the boys also had a helper inside the cave: A student who was able to take a leadership role by translating for them. Staff at his school told CBS News' Anna Werner, that's not surprising. He's a boy who has already faced significant challenges in his life and overcome them.

Teacher Kru Nice says 14-year-old Adun Sam-On has always been a leader, despite the fact he doesn't have his parents with him or even an official home. Since Adun's parents slipped him out of Myanmar eight years ago to escape the ethnic conflicts there, he's become one of many students at this school considered "stateless." He's not a citizen of any country. Yet in Thailand, Adun is a top student and a standout athlete.

Kru told us she was so worried when she learned Adun was trapped in the cave. But Adun's proficiency in languages – he speaks four – proved key inside the cave, as he acted as translator for the British divers during the complicated rescue.

MORE: Read the full story at CBS