Very good question...there is a lot to becoming a lawyer and it can be confusing. I found a good link for you and will paste in some of the information below. There is no specific degree requirement for your 4 year Bachelors degree but I would suggest checking with the law school you plan on going to for their requirements. good luck!
Education:Lawyers complete a minimum of seven years’ post-high school education in order to become qualified to practice law. This education includes a four-year undergraduate degree and three years of law school (or four years in a part-time law school program). Lawyers must also pass a bar examination for each state in which they wish to practice as well as an ethics examination in most states.
I am a lawyer. I'd like to share with you how I became a lawyer. Law school requires critical thinking, analysis, and reading comprehension skills so I took courses in college that I believed would help me improve these skills. There are also some colleges that provide pre-law courses that can help you improve these skills. Law school admissions will look at primarily your LSAT scores, your undergraduate grades, and your extracurricular activities. I studied hard in college, served in leadership positions in various extracurricular activities, and prepared for the LSAT by enrolling in an LSAT prep course. When I was preparing my undergraduate and law school applications, I had several peers and mentors review and critique my applications.
Once you get into law school, you will find that it is different from undergraduate. Law schools generally have one exam per course which you will take at the end of the semester and the exam score will generally be your final grade for the entire course. So the exam is the most important aspect of each course. The law school exams are also different from undergraduate exams. For the typical law school exam, you will be expected to analyze several legal issues.
After law school, I prepared for the bar exam. I took a bar exam prep course and studied hard to prepare for it. The bar exam is slightly different from the typical law school exam so the bar prep course helped me properly prepare for it. Once you graduate from law school and pass the bar exam, you will get a bar license that will allow you to practice law.
Being a lawyer has been a rewarding experience for me and I love being able to help people. I hope this information is helpful to you! Good luck and study hard!