First of all, you have to complete a four-year degree from a recognised educational institute before seeking admission in a law school.
However, mostly the law schools do not require you to study any particular courses in your four-year degree before taking admission for a law course. But these law schools require you to have a good grade-point average (GPA).
It will help you in getting familiar with law if you study a course relevant to this field in your four-year degree before taking admission to a law school.
Try to spend as much time as possible in public service which will enable you to get a comprehensive knowledge of people’s problems.
You need to pass the Law School Admission Test (LSAT) for getting into a law school as it is mandatory.
You need to take required courses in your first and second year of law degree. Make sure you also include such courses that are relevant to public service.
Also try to get internship with any law firm that deals with public interest cases during your study at law school.
You also have to pass the Multistate Professional Responsibility Examination (MPRE) which will enable you to show an ethical conduct.
Then you have to pass the bar exam which will test your knowledge about the subjects you have already studied in your law school.
After completing the degree, try to find a job in any public interest firm that deals directly with the problems of people. You can also apply to work with federal government, state government, non-profit organisations or for legal aid societies.