• Drug courts must be used for high-risk defendants facing lengthy jail terms;

• less onerous and expensive alternatives to drug court must be readily available for low-risk
  defendants and those who commit low-level offenses.

• Drug courts must be open to all people regardless of race, economic status, or immigration status; methodologically sound research must be done to ensure drug courts are open to all.

It's a long report that includes everything from the history of drug courts to why decriminalization is the smart, fair , economical and effective alternative to prisons:

The criminal justice system is overwhelmed with cases. Nearly 2,000,000 Americans are arrested each year for drug crimes, and 500,000 are currently incarcerated for a drug offense. These victimless crimes should never enter the criminal justice system.