Overview

Sean M. Spiller is a municipal official, labor leader, and educator in New Jersey. He serves as mayor of Montclair and as president of the New Jersey Education Association, the statewide teachers’ union representing public school employees across New Jersey.

Spiller previously worked as a public school science teacher and later served as president of the Montclair Education Association before becoming involved in broader labor leadership roles within the NJEA. His work in education and labor advocacy has focused on public school funding, teacher representation, and education policy.

In municipal government, Spiller served on the Montclair Township Council before being elected mayor. His tenure in local government has involved oversight of municipal operations, local development initiatives, and community services in Montclair.

Political Career

Mayor, Montclair (2024-present)

Councilman, Montclair Township Council (2020-2024)

President, New Jersey Education Association (2021-present)

Candidate, Governor of New Jersey (2025, unsuccessful)

Key Policy Areas

Public education funding and school policy

Labor and workers’ rights

Municipal governance and local services

Housing and community development

Infrastructure and municipal investment

Notable Actions / Initiatives

Elected president of the New Jersey Education Association in 2021, representing educators across New Jersey.

Elected mayor of Montclair in 2024.

Served on the Montclair Township Council prior to becoming mayor.

Participated in statewide political debates during the 2025 New Jersey gubernatorial election cycle.

Education

Not publicly available

Personal

Birth date: Not publicly available

Residence: Montclair, Essex County, New Jersey