Selecting the right lawyer isn't easy, especially because when you need a lawyer you are probably in a crisis. Most lawyers are happy to report cases they have won on Avvo or their own websites, likewise their legal education. Cases they have lost, not so much. Complaints against attorneys are not public- only certain disciplinary actions such as public censure or suspension. In my personal opinion, the most important characteristics of a good lawyer are courage, integrity, and good communications skills. At the end of the day, you have to use your good sense in selecting a lawyer just as you would a contractor.
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You also could check the state bar website to see how long they have been practicing and if they have a disciplinary record. You can ask the lawyer to provide you with referrals.