People who make better choices do better. Better choices in life including education, jobs, staying out of jail, etc.
This is directly tied to improved outcomes (which is where you are incorrectly looking at things).
If you were really interested in improving things-you'd advocate for marriage-single marriage is the biggest predictor of poverty and poverty leads to diminished outcomes. Poverty leads to less parenting time, less academic performance, etc and in that leads to diminished outcomes.
Instead, you seek to target those who are doing what they SHOULD be doing, this is merely a consequence of that.