oy...sadly, I worked for a llooooong time on a musical theatre truope of teens singing' about being teens...lemme see what I remember:
Just about anything from Runaways, same goes for The Me Nobody Knows, and for John & Jen.
I have a feeling there's something in Seussical but it's not comin' to mind.
...there's an unknown named something like "turning into my mother" or "My mohter's face" or something...about being afraid of turning into your mother, lol.
Mama I'm A Big Girl Now from Hairspray
The Dance from Piece
NeverNeverland from Piece
Brag Rag from How To Eat Like A child
Sister from Pump boys and dinettes
FAmily from Dreamgirls
Kindness from Bright Lights Big City
If Mama Was Married from Gypsy
Kids from Bye Bye Birdie
County Fair from Das Barbecue
Learning To Be Silent from Footloose
Can You Find It In Your Heart from Footloose
Timoune from Once On This Island
All Fall Down from Infinite Joy
?No one is alone from into the woods
Happy Families from Prodigal
Run With The Tide from Prodigal (sorta)
Beauty Within from Starmites
Not While I'm Around from Sweeney Todd
Look At Me from Violet
Home from Piece
...hope that helps! If you still need more, I'll go peek at the song lists I've got strewn about from the past 10 years, lol.
If I show you the darkness I hold inside, will you bring me to light?