For ages 18–36 months, we nurture curiosity, confidence, and early independence through play-based exploration and responsive teaching. Inspired by the Reggio Emilia approach, our program helps children build communication, social-emotional, cognitive, and motor skills while developing a foundation for lifelong learning.

For ages 3–4, we build foundational skills through hands-on, play-based learning in a nurturing environment. Daily experiences in music, Spanish, physical education, and STEM help children develop confidence, curiosity, and essential skills while preparing for Kindergarten.

In Kindergarten through Grade 5, we challenge students to think critically, ask questions, explore their interests, and build a strong academic foundation. Through hands-on learning in areas such as mathematics, science, world languages, and the arts, students develop confidence, creativity, collaboration, and a passion for discovery.

In Grade 6 through Grade 8, students build independence, deepen their understanding, and discover new interests during an important stage of growth. Coursework spans STEM, social studies, athletics, and interdisciplinary learning. Students strengthen critical thinking, collaboration, and problem-solving skills along the way.

In Grade 9 through Grade 12, we prepare students for college and beyond through a challenging, personalized academic experience. They explore humanities, the arts, entrepreneurship, and global engagement while pursuing their passions and developing leadership skills. Graduates leave with the confidence to pursue what’s next.

From STEM and entrepreneurship to arts, athletics, world languages, and global experiences, students explore their interests through opportunities that extend learning beyond the classroom.

A 6:1 student-to-teacher ratio and small class sizes ensure every student receives personalized attention, meaningful support, and opportunities to reach their full potential.

Through service-learning opportunities, community partnerships, and meaningful connections with educators and peers, students develop empathy, leadership, and a strong sense of belonging.

Through STEM and Innovation, Creativity & Entrepreneurship, and interdisciplinary learning, students think creatively, embrace challenges, and develop the skills to solve real-world problems.

Since 1890, AC has fostered success through academic excellence, leadership opportunities, and personalized guidance, helping students develop the skills, confidence, and independence to succeed in college and beyond.

“We are so happy at AC. Our child is thriving, building confidence, and discovering new interests in a supportive environment. From participating in new experiences to building meaningful relationships with teachers and classmates, AC has provided a place where they feel encouraged, valued, and excited to learn.” - Parent

“AC truly understood what made our child unique. The teachers and college counseling team took the time to know their strengths, interests, and goals, creating a personalized experience that prepared them for college while helping them develop confidence and a strong sense of belonging.” - Parent

“I have been part of the Allendale Columbia community since I was three years old. My experience at AC has been incredible, from the friendships I have built and the people I have met to the experiences we have shared together. The small-school environment creates a welcoming community where everyone knows each other and students feel supported to be themselves.”

 - Senior

“I am a graduate of Allendale Columbia, and I couldn’t have asked for a better experience. I built amazing relationships with faculty members and was extremely well-prepared for college. AC gave me the foundation, support, and confidence to succeed beyond graduation.” - Alumni