A strong break needs to be made between the reality of life and that of television shows.
In the reality of Glee the RIAA may not exist, copyright laws could be drastically different. Given that a sixteen year old looks and sounds like he is in his mid-twenties this is entirely conceivable. We would also all have amazing hair and teeth.
If we pull this into our reality, then I would believe that the production company Fox owns the rights to the songs being sung, or has enough influence over the owning bodies to use them without concern.
For actual high school performances and their rights, I will reference jbarciauskas's comment.
In the reality of Glee the RIAA may not exist, copyright laws could be drastically different. Given that a sixteen year old looks and sounds like he is in his mid-twenties this is entirely conceivable. We would also all have amazing hair and teeth.
If we pull this into our reality, then I would believe that the production company Fox owns the rights to the songs being sung, or has enough influence over the owning bodies to use them without concern.
For actual high school performances and their rights, I will reference jbarciauskas's comment.