Welcome to the Patriot Family

At John Carroll, each student is known and valued.

From the time they arrive for freshman orientation to the moment they walk confidently across the graduation stage, our stellar faculty and staff take the time to care for our students and help them develop into the best possible versions of themselves.  Our excellent Catholic education and transformative experiences prepare students for college and beyond, allowing them to live their faith through their actions and make an impact on the world.  That’s why we say, “Patriots do!”

Our motto, “Patriots do,” comes from the Bible verse James 1:22: “Be doers of the Word.”  In a recent World Youth Day address, Pope Francis echoed this message.  “Go on the offensive!” he said. “Play down the field, build a better world, a world of brothers and sisters, a world of justice, of love, of peace, of fraternity, of solidarity.” Our students and alumni from across the globe are building that better world, whether it be working to provide clean water for people in third world countries or searching for a cure for the Zika virus. 

At John Carroll, there are so many opportunities to make lasting memories and find a passion.  Start your own business in the Financial Literacy and Entrepreneurial Exploration (FLEX) Program.  Build a robot in the STEM Academy.  Express yourself on the stage in the new College Preparatory Dance Program.  Bond with your teammates on the athletic field.  Whatever your passion, John Carroll has a class or extracurricular activity to help you develop it. 

We invite you to come visit our 72-acre campus and see how you can be a part of the Patriot family!


Tom Durkin, Principal

Steve DiBiagio, President

Mission Statement


The John Carroll School is a Catholic, co-educational, college-preparatory learning community empowering a diverse student population to attain its highest potential. Through innovative practices and curriculum, we prepare students to positively influence a global society as critical thinkers and creative problem solvers while being socially responsible, spiritually centered, and morally grounded in our Catholic beliefs.

Our Promise to every John Carroll student and parent:

We will provide a Catholic foundation of values, challenging academics, and real-life experiences . . . so that our students will embrace opportunities and excel as responsible participants in the global society. 


We will do everything possible to instill in all of our students: a strong sense of self; the capacity to achieve their personal fulfillment and professional aspirations; a global perspective; and a strong, moral compass to guide them throughout life. 

Quick Facts

About Student


Religious Affiliation
Roman Catholic

Accredited by the Association of Independent Maryland and DC Schools.

There are 668 students in 9th through 12th grade at John Carroll. They come from Harford, Cecil and Baltimore Counties in Maryland, York County in Pennsylvania, and from 8 countries around the world.

With 58 AP and Honors courses and an average SAT score that is 135 points higher than the Maryland average, our students are challenged and ready to excel in college.

Our 72-acre campus includes one main building with a chapel, academic and arts wings, media center, 600-seat auditorium, 2 gymnasiums and a weight room inside. Outside are 2 ponds, 2 synthetic turf fields, baseball and softball fields, track and tennis courts. A dorm for male students, Saint Joseph Hall, is also located on campus.

For the 2018-2019 academic year, tuition is $17,200 for domestic students and $22,200 for international students.