Margo Kaplan's research explores legal limitations on intimate decisions, particularly the use of criminal law in areas of sex and health. She is a professor of law at Rutgers Law School and teaches Criminal Law, Health Law and Policy, and Sex Crimes.

Her publications have examined topics such as sex-positive law, sexual assault, pedophilia, HIV-exposure criminalization, and reproductive rights. Professor Kaplan has also explored these issues in op-eds and interviews for publications such as the New York Times and the Washington Post.

Prior to joining the Rutgers faculty, Professor Kaplan was a visiting assistant professor at Brooklyn Law School. Before that, she served as director of planning and research for the Center for HIV Law and Policy, as well as a staff attorney fellow for the American Civil Liberties Union. She clerked for Judge Julio Fuentes of the U.S. Court of Appeals for the Third Circuit and Judge John G. Koeltl of the U.S. District Court for the Southern District of New York. She graduated cum laude from New York University School of Law and also received a master in public administration degree from the John F. Kennedy School of Government at Harvard University.