Marsha Levick co-founded the Juvenile Law Center in 1975 and served as its first executive director until 1982. In her 30 year legal career, Levick has been an advocate for juvenile and women's rights and is a nationally recognized leader in juvenile law.

During her term as executive director at JLC, Levick represented many individual children in delinquency and dependency proceedings and litigated challenges to conditions of confinement in juvenile institutions and standards for pre-trial detention throughout Pennsylvania.

In 1995 she became JLC's legal director and now manages the Center's litigation and appellate docket. In that capacity she has successfully litigated challenges to the state Department of Education's failure to provide pre-trial school-aged youth in county prisons with basic and special education; the Department of Public Welfare's failure to ensure the availability of foster care payments to eligible kinship care givers; a local detention center's failure to ensure the safety of a mentally ill resident; and a Pennsylvania statute denying Philadelphia adjudicated youth the opportunity to return to their regular public schools after completing residential placement. In addition, Levick has authored or co-authored numerous appellate and amicus briefs in state and federal appeals courts throughout the country, including many before the US Supreme Court, and has argued before both state and federal appellate courts in Pennsylvania and elsewhere. Levick and JLC garnered media attention recently as one of the leading organizations to file an amicus brief against the juvenile death penalty in Roper v. Simmons, where the Supreme Court ultimately held the juvenile death penalty unconstitutional. Levick has also co-authored scholarly articles on zero tolerance policies, girls in the juvenile justice system, and juveniles' right to counsel at all stages of the juvenile court process.

From 1982-1988, Levick worked for the National Organization of Women Legal Defense and Education Fund, serving first as legal director and then executive director. From 1989-1995 she worked in private practice for a commercial litigation firm specializing in securities industry disputes.

Nationally, Ms. Levick worked with the American Bar Association's special taskforce to develop standards for the prosecution of juveniles in the adult criminal justice system, and serves on the boards of the National Juvenile Defender Center and Juvenile Justice Project of Louisiana. Levick is also a member of the advisory board of Rutgers-Camden Law School's Juvenile Justice Clinic. In 2006, Levick was the recipient of the Temple Law School Women's Law Caucus annual Professional Achievement Award.

Levick is a graduate of the University of Pennsylvania and Temple University Beasley School of Law. She is an adjunct faculty member at both the University of Pennsylvania Law School and Temple University Beasley School of Law, where she teaches courses on Juvenile Justice and Appellate Advocacy.