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About Sadlier Religion

In 2017, Sadlier celebrates its 185th year of offering quality catechetical and sacrament preparation materials that faithfully present the teachings of the Catholic Church. Sadlier’s We Believe/Creemos catechetical series for Grades K–8 and other programs, such as Believe • Celebrate • Live/Creer • Celebrar • Vivir—all with English and bilingual (Spanish/English) editions—address the needs of Catholic schools, parishes, and families.

Sadlier Religion programs are found to be in conformity with the Catechism of the Catholic Church as determined by the Subcommittee on the Catechism, United States Conference of Catholic Bishops and incorporate the Roman Missal, Third Edition.

As the company continues to grow, innovate, and adapt, we’ve developed new tools like our Sadlier Connect platform, your web-based access to program resources. But always, we’ll be committed to solid catechetically sound content and you, the customer, to ensure that all our programs serve your needs and help your students live their faith.

Celebrate Sadlier's 185th Anniversary

Download the Historical Timeline of Sadlier and the Catholic Church.

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Back in 1832, two brothers, Denis and James Sadlier, immigrants from Ireland, began publishing materials to meet both the spiritual and educational needs of the Irish immigrant community. This began the story of William H. Sadlier, Inc. and a family-owned company that would be passed down across the generations and would continue to innovate and publish religion resources that serve the needs of the Catholic community.

Sadlier has always strived to create pioneering ways to engage students in their faith. That started with individual titles like the Baltimore Catechism with Study Lessons and then the first catechetical series, On Our Way, published in 1955. In 1973, Sadlier published its first bilingual Spanish-English textbook, Jesus Nos Dice—the very first bilingual religion program for the Spanish-speaking communities—communities which Sadlier continues its commitment to serving with Creemos, a bilingual catechetical series for Grades K–8.

Today, Sadlier draws upon its 185-year history to develop outstanding programs. As believers and parents, as writers and editors, as catechists and teachers, the Sadlier family is grateful to be entrusted with supporting Catholic faith formation—for children, families, and the whole parish community.

The latest editions of Sadlier’s We Believe, Grades K–8, infuse Catholic identity and incorporate Project Disciple activities that together encourage students and their families to be evangelizers by the way they live and uphold their faith.

In addition, the new Sadlier Connect digital platform for We Believe provides access to program resources, eBooks, and online assessments that provide instant feedback, automatic scoring, and a robust reporting system to help track student achievement. Sadlier Connect also provides free resources for other Sadlier programs.

The current Chairman of the Board Frank Sadlier Dinger and President William Sadlier Dinger are the great-grandsons of William H. Sadlier and direct descendants of Denis and James Sadlier. They’ve been awarded the Emmaus Award for Excellence in Catechesis by the National Association of Parish Catechetical Directors as well as other award for lifetime achievement and dedication to the church.

In turn, Sadlier recognizes people for their service to Catholic education and supports organizations in various ways. Learn more on our Awards & Community Outreach page.

For over 185 years, the Sadlier family has nurtured William H. Sadlier’s original vision with integrity, creativity, and a commitment to ongoing excellence. That family tradition is felt today and will continue to help us serve our customers into the future.

Learn About Sadlier Religion's History

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Pope Francis receives a copy of We Believe Catholic Identity Edition from William Sadlier Dinger, President of Sadlier.


Anziani e Nonni Event at the Piazza San Pietro, 28.9.14. (L’Osservat ore Romano)