Mallie's reply

If 17 girls popped up pregnant in Irvington High School.
The reason they were susceptible to such an agreement would be the story.
The void they were trying to fill, their hopeless ghetto lives, lack of role models, etc. would be the reason for the local baby boom.

I doubt the pact would even be considered as the "Reason".

This whole "Pact" component makes these girls seem more like victims than young girls making bad decisions.
When our girls do the same thing, they seem like fresh little hoochie mamas exercising bad judgement due to poor circumstances.