Filming crews became part of the school community during production and are now working on the next series.
There is plenty to capture, from big auditions and band formations to hundreds of stage performances.
Director of studies, Elizabeth Odell, has watched as some former students, like Ella Henderson, have gone on to big success.
She said: "I think knowing that those people follow this path, they were at the school, they were in these rooms, they were attending those lessons, and they have achieved their goals, is inspiring.
"I've worked here for a long time, seeing people like Ella Henderson grow up and have an amazing successful career. I'm really proud. I'm really proud that I had this tiniest part in that journey.
"Seeing young people do what they love... It's a privilege to work with people that are talented, ambitious, and driven to follow their goals."