Turns out there was literally now a school for pre pubescent heroes.
Ever Learn Academy
It teaches kids who were born with there powers how to use and control them. They had a universal acceptance rate, even taking in the children of some super villains. The school was a safe space, with several retired heroes acting as instructors. This seamed like the perfect place for you. It took some convincing, but your parents eventually sent you to Ever Learn Academy. After you showed them your new powers of course. Since they had no idea how to raise a kid with stretch powers.
On the fill out form you entered your name as “Rubber Girl” you originally wanted to be called “Rubber WOMAN” but they your older sister pointed out that you aren’t actually a “woman” yet.
...
The school was three stories tall and made of glass. You would have been bouncing off the walls of the car with excitement if you weren’t buckled to your seat. There inside were so many heroes dropping off there equally powerful kids. There were also some normal parents dropping off there super kids. And you spotted at least three super parents dropping off there normal kids. Probably hopeful there powers would develop eventually.
“Have a good day sweetie” you’re mom says as you stop.
‘Alright bye, love you mom’ You respond without thinking.
You stretch your legs out the door to get to the building. Getting some stairs as your blue and white dress fluttered in the wind as you raced into the school. Your sister gave you some panties, so they were probably looking at those. But you didn’t care. You were so close to the building and starting your new life as a hero.
Training at: Ever Learn Academy.