Is the "court" system the best way to get consultations for a anger management practice?

If by "consultations" you mean having clients sent to you for consultations, the answer is that the court system would be an excellent source for new business because people who are court-ordered to consult with you have no choice but to show up and enroll, usually as a condition of probation.  These clients may not generally be the most motivated recipients for anger management services, so if you can acquire a reputation for success with them you will likely assure yourself a continuing stream of business.
My guess is that schmoozing marriage counselors and divorce might also get you occasional referral consultations. 
Good luck. 

I spent over twenty-five years working with court ordered clients!  Resistance is often a big obstacle to therapeutic change!  I saw change in many of those initially resistive clients.   Many came into therapy resentful but finished gratefully.  Many anger management clients are either dealing with a court order mandate into treatment or have been given an ultimatum from a spouse or  a family member:  “Treatment or else...’ 
Anger management referrals are best received from court and state agencies such as Child Protective Services!  

You could meet with family attorneys as this may be a great resource for you and offer programs at local churches to get your name out.

I would think you would want to start at the District Attorney's office.
MW

Anger management counseling is available at any time, with the right counselor.  If you have someone who needs it, but is non-compliant or balks at authority, anger management counseling can be a condition of probation, a parenting plan, or a juvenile delinquency action, among other possibilities.

I would go to counseling and stay away from the court system.

No,   it is probably the worst way!

I am not sure the Courts would provide enough information for a practice that involves "anger management".  I would also look to see what continuing legal education classes are available,   it would appear to me that the Court system would really be involved with the final stages of anger management.  
The inquiry seems to leave a lot of information out-such as what is meant by "practice"?

Criminal Defense Attorneys and getting registered with Adult Probation departments

Professional counseling would be my first choice.