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Old School vs. New School Presbyterians: The 1837 Split Explained

Discover the theological and practical differences that led to a major schism in the American Presbyterian Church.

By Garret Merkley · Explainer · Jun 4, 2026
Branched from How the Second Great Awakening Split American Denominations and Created New Ones
Quick take
  • The 1837 split divided the Presbyterian Church into Old School and New School factions.
  • Old School emphasized strict Calvinism and traditional church order.
  • New School embraced revivalism and broader ecumenical cooperation.
  • The division reflected wider tensions in American Protestantism over tradition versus adaptation.

In 1837, the Presbyterian Church in the United States of America experienced a significant schism, dividing into two distinct branches: the Old School and the New School. This split wasn't just about minor disagreements; it reflected deep theological, practical, and cultural tensions within American Protestantism, particularly in the wake of the Second Great Awakening.

What Drove the Separation?

The core of the Old School vs. New School debate centered on how to interpret and apply traditional Calvinist doctrine in a rapidly changing America. While both sides considered themselves Presbyterian, their approaches to theology, evangelism, and church governance diverged significantly.

Old School: Tradition and Order

The Old School Presbyterians were staunch defenders of strict Calvinist orthodoxy, emphasizing God's absolute sovereignty, predestination, and the Westminster Confession of Faith as the definitive statement of belief. They believed in a highly educated clergy and a structured, denominational approach to church life and missions. They were wary of the emotional excesses of revivalism, fearing it diluted theological purity and undermined the authority of the church. Their focus was on maintaining doctrinal integrity and ecclesiastical order, often viewing interdenominational cooperation with suspicion.

New School: Adaptation and Revivalism

In contrast, the New School Presbyterians were more open to adapting traditional Calvinism to the American frontier experience and the fervent energy of the Second Great Awakening. They interpreted Calvinist doctrines, particularly human agency in salvation, in ways that made room for revivalistic methods and individual conversion experiences. They emphasized evangelism and missions, often partnering with other denominations through organizations like the American Home Missionary Society. The New School sought to make Christianity more accessible and impactful in a growing nation, sometimes at the expense of strict adherence to every nuance of the Westminster Confession.

Why This Split Matters

The 1837 schism was more than an internal church dispute; it mirrored broader societal and religious shifts in 19th-century America. It highlighted the tension between traditional authority and a more individualistic, democratic spirit, and between theological purity and practical evangelism. The split significantly impacted the growth and direction of Presbyterianism, with both branches developing their own seminaries, mission boards, and publications. Though the Old School and New School eventually reunited in 1869, the theological and practical fault lines revealed during this period continued to influence American Protestantism for decades, shaping debates over doctrine, social reform, and the church's role in society.

What were the main theological differences?
The Old School emphasized strict adherence to the Westminster Confession of Faith, focusing on divine sovereignty and predestination. The New School interpreted Calvinism more loosely, emphasizing human agency in salvation and making room for revivalistic experiences.
How did the split actually happen?
The Old School, holding a majority at the 1837 General Assembly, passed a series of "Exscinding Acts." These acts effectively expelled four New School-leaning synods (regional church bodies) from the denomination, forcing the formal separation.
Did the two schools ever reunite?
Yes, the Old School and New School branches of the Presbyterian Church in the USA eventually reunited in 1869, forming the Presbyterian Church in the United States of America (PCUSA).