Lauren Koster
Managing Partner | NY & CT
Contact Information
C (914) 609-6642
E lauren@commonlight.legal
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Lauren represents several tax-exempt entities, including public charities, private foundations, and social welfare organizations. She advises her clients on a wide range of matters as their outside general counsel. Lauren also manages direct representation and systemic legal advocacy on behalf of charter schools and charter management organizations.
Throughout her legal career, Lauren has merged various interests, ranging from litigation to transactional law, in service of the public good. She clerked in the United District Court for the District of New Hampshire and the Massachusetts Supreme Judicial Court. Lauren also served as a Skadden Fellow, prior to the law firm’s unlawful capitulation to the Trump Administration, proudly representing children as a court-appointed advocate in juvenile rights matters, such as special education and truancy cases and abuse and neglect petitions in the Essex County Juvenile Courts of Massachusetts.
Prior to law school, Lauren was a public school teacher and education policy advocate in New Haven, Connecticut. She has worked with several nonprofit entities throughout her entire career.
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Boston College Law School (J.D. cum laude)
Articles Editor, Boston College Law Review
President, Public Interest Law Foundation
Public Service Scholar
Yale University (B.A. Political Science)
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Hon. Paul J. Barbadoro, U.S. District Court, District of New Hampshire
Hon. Andrea K. Johnstone, U.S. District Court, District of New Hampshire
Hon. Scott L. Kafker, Massachusetts Supreme Judicial Court
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Charter & Independent Schools
Prevailed in petition for declaratory ruling to clarify meaning of "reasonable costs" that qualify for reimbursement under Connecticut General Statutes, Section 10-66ee(d)(7)
Defeated motion to stay declaratory ruling and motion to amend to the administrative record, both filed by opposing counsel in administrative appeal
Prevailed in administrative appeal, with school districts’ entire case dismissed and Declaratory Ruling upheld by Connecticut Superior Court
Defending favorable judgment from state trial court in Connecticut Appeals Court
Entity Formation, Compliance, and Governance
Formed new public charities in Connecticut and Massachusetts
Received two years of penalty abatement from IRS on behalf of a mission-driven CT-based LLC
Provided CT nonprofit client and municipal agency partner with enterprise memorandum of understanding and corresponding data-sharing agreements to facilitate a municipal pilot program involving several public entities with the goal of supporting at-risk youth
Designed and reviewed grant agreements on behalf of MA nonprofit client supporting habitat sustainability throughout the country
Brought NY nonprofit into compliance by drafting required policies and supporting implementation by board of directors
Pro Bono
Won petition for return of child under the Hague Convention on behalf of Colombian father whose child was wrongfully retained in CT
Serves on the Board of Directors for Wild Woods Restoration Project, Inc., a volunteer organization in the Hudson Valley that grows local ecotype native plants for restoration projects
Secured an Individualized Education Program (IEP) for a MA student, who thrived academically and behaviorally with proper support
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Marquis Who's Who in American Law
35 Under 35, Kappa Alpha Theta Fraternity, recognizing outstanding accomplishments in law
Susan Grant Desmarais Award, Boston College Law School, for public service achievement and leadership
Public Interest Designation Fellow, Boston College Law School
Pro Bono Excellence Award, Boston College Law School, for 100 hours of service
Public Service Scholar, Boston College Law School, full-tuition merit scholarship in recognition of contributions to the public good
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Publications
Permissible Activities in an Election Year for Section 501(c)(3) Public Charities, blog (2024)
The Fragile Future of American Electoral Democracy: Storied Minds Discuss the Ramifications of the Mueller Report, Boston College Law School Magazine, Online Exclusive (July 2019)
Playing by the Rules: A Legal Remedy for Incarcerated Kids, Boston College Law School Magazine (Summer 2019)
Two Sides of the Same Coin: Reconciling the Comparable Culpability of Juveniles and the Intellectually Disabled in Death Penalty Jurisprudence, Trinity College Law Review, Vol. 22 (2019)
Who Will Educate Me? Using the Americans with Disabilities Act to Improve Educational Access to Incarcerated Youth with Disabilities, Note, Boston College Law Review, Vol. 60 (2019)
Presentations
Preparing for Your Organization’s Survival in a New Nonprofit Climate, Pursuing Your Mission Series, Yale Alumni Nonprofit Alliance (Sept. 2025)
Clerkships, Panelist, Career Services Office of Boston College Law School (Nov. 2024)
Careers in Public Interest & Public Service, Panelist, Prof. Ingrid Hillinger, Boston College Law School (Oct. 2025, Oct. 2024, Nov. 2023)
Special Education Reimbursement Training for Charter School Leaders, Lecturer/Trainer, sponsored by Connecticut Charter School Association and The Center for Learner Equity (Aug. 2024, June 2024)
Being the First, But Not the Last: Careers in the Law, Speaker, 1stGenYale Conference, Yale University (Apr. 2023)
Careers in Public Interest & Public Service, Panelist, Public Interest Law Foundation of Boston College Law School (Oct. 2022)
Philanthropic Family Affairs: When Generosity & Genes Do Not Mix, Guest Lecturer, Trust & Estates with Prof. Stuart Hamilton, Boston College Law School (Oct. 2021, Apr. 2021)
How to Excel as a New Attorney, Panelist, COVID Relief Legal Services, Center for Experiential Learning at Boston College Law School (July 2021)
Will the State Help My Student? A Guide to Juvenile Court for Teachers, Lecturer/Trainer, Educators 4 Excellence - Boston (Mar. 2021)
How to Leverage Your First-Generation Identity in the Workplace, Panelist, Boston College Law (Mar. 2021, Feb. 2020)
Young Alumni in Public Interest Law, Panelist at Public Interest Law Retreat, Boston College Law School (Oct. 2020)
Government, Administrative, & Nonprofit Law, Panelist, Admitted Students Day, Boston College Law School (May 2020)
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Professional Affiliations
Member, NY State Bar Association
Member, Historical Society of the NY Courts
Member, Connecticut Bar Association
Current Community Involvement
Board Member, Yale Alumni Nonprofit Alliance
Advisory Board Member, Public Interest Law Foundation, Boston College Law School
Class Agent, Yale Alumni Association
Mentor, Cross Campus Program, Yale Alumni Association
Past Community Involvement
Board Member, Wild Woods Restoration Project (Hudson Valley)
Chair, Workplace Conduct Alumni Working Group, Workplace Conduct Clerks' Subcommittee, First Circuit, U.S. Court of Appeals
Southeast Minnesota Prospective Student Interviewer, Yale Alumni Schools Committee
Class Agent, Graduates of the Last Decade (GOLD), Advancement Office, Boston College Law School
Alumna Representative, Dean's Public Interest and Service Working Group, Boston College Law School
Alumna Fellow Mentor, Rappaport Center for Law & Public Policy
Secretary, Boston Alumnae Chapter, Kappa Alpha Theta Fraternity
Financial Advisor, Epsilon Tau (Yale) and Zeta Xi (Harvard) chapters, Kappa Alpha Theta Fraternity
Interests
Long-distance running, group fitness classes, and vinyasa yoga
Contemporary fiction, history, and social science books; creative writing
Art museums and galleries, international travel, and foreign language study
Crocheting baby blankets for friends' children; hosting multi-course dinner parties
Bar Admissions
Connecticut
New York
Massachusetts
U.S. Supreme Court
U.S. District Court for the District of Massachusetts
U.S. District Court for the District of New Hampshire