Join us for 8:10 am

All School Mass on Wednesdays at


New Website Coming in July!


We welcome you to St. Mary's Catholic Schools!  For over 100 years, St. Mary's has provided quality, affordable parochial education for O'Neill, Nebraska and surrounding areas.  We continue that tradition today, and we invite you to explore the information on our site. We welcome you to "Cardinal Nation"!  May my soul magnify the Lord!

St. Mary's Grade School  & Preschool

326 E. Benton

O'Neill, Nebraska 68763

Phone: 402-336-2664

Fax:  402-336-2055


Business Office

301 E. Adams

O'Neill, Nebraska 68763

Phone: 402-336-1602

Fax:  402-336-1533


St. Mary's High School

300 N. 4th St.

O'Neill, Nebraska 68763

Phone: 402-336-4455

Fax:  402-336-1281