The Quality of an actors work to an audience usually includes how they physically match the character.
In most cases there are obvious differences between a teenager and an adult in their mid twenties or thirties: height, muscle mass, voice pitch, maturity etc.
The casting of adults to play teenagers is normally a practical decision in terms working hours and avoiding additional costs like chaperones and not about who is best for the part.
I think that the art improves if actual teenagers play those roles, as long as they have had the appropriate level of training.
Thanks to the availability of high quality youth theatre and performing arts high schools, many times you can’t tell the difference between someone who is still in high school and recent BFA graduates, skills wise.
Updated On: 2/2/19 at 03:32 AM