Answer:
Major problems at the end of the war included labor strikes and race riots, and a lag in the economy due to farmers' debts. The Red Summer of 1919 saw an increase in violence in more than two dozen cities, as returning veterans (both white and African American) competed for jobs.
One would be teen pregnancy (short story my best friend is 15 and just had a baby girl named Ella 3 days ago, She didn't use any protection and refused to take birth control)
Another one is STD's those are very common especially if you have multiple partners.
A site I'm on says "Becoming less likely to finish High school" I am not sure if that is true. I suppose it could be true if you have a child before graduation but honestly if your education is important to you a child wont stop you from getting it. It may limit you tho.
Okay I hope this helps! Please rate!