I don't think woman holds inferior status in Bihar. If a family is illiterate, it's both men and women. But, yes woman still don't inherit properties of their parents in most of the families. This keeps the dowry system alive. The main problem is castism. That brings racism in the society. People are not able to unite for any cause because of the existing caste loyalties. Their cause is narrow restricted to their caste. Bihar don't just produces Lalu. There are pools of highly qualified professionals working in India and abroad. Every 5th graduate from IIT is a Bihari. Bihari migrants working as skilled and unskilled workers in various parts of the country are very hard working and are law abiding citizens. Just a few great personalities don't makes a society. In recent times Dr. Naveen Chandra Ram Goolam (PM of Mauritius), Pratap Narain Radhakishun (ex-PM of Surinam), Vasudeo Pandey(ex-PM of Trinidad),Bhagat Jagdeo(President of Guyana)all are of Bihari origin.
