Yes, middle class girls are way more likely to abort if they get pregnant in their teens, as they know it's the sensible thing to do. (Although let's face it, it is extremely unlikely that a girl from a middle class family will fall pregnant in her teens!)
95% of girls I know who had babies in their teens are from working class, or lower working class backgrounds, and didn't go on to achieve very much, despite claims from a few posters, that they, (or someone they know who had a baby at 16,) became a lawyer, a doctor, a pilot, a vet, or an astronaut yada yada....
My cousin who I only see a couple of times a year, (at the occasional extended-family event,) is in her early 40's, and ended up having 5 more kids and has never worked a day in her life. Same with almost every single woman I know who had kids in their teens.
Sorry, but girls who have kids in their teens rarely become university educated, high flying career women on £90K a year. It rarely happens. Despite all the defensive and angry comments on here saying otherwise.