|Books do good things to everybody!|
Two factors play critical roles in protecting girls-regardless of their socioeconomic status and household structure-against early sexual activity: (1) the quality of their relationship with their mothers and (2) achievement in school, specifically their reading proficiency.
And knowing that the academic success is also very much household attitudes-bound, more support for education (oh, books! oh, good public education!) and quality family time (oh, parental leaves! oh, work that's compatible with private life!) should be the key for anybody that actually feels like supporting family values (!) and postponing sexual activities.
If that's not your cup of tea, this might be,