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Why Families Choose CAISL
Families choose CAISL for a community where every child is known, challenged, and inspired to grow — academically, socially, and personally.
Our Community
What does it mean to be part of an American international community? At CAISL, we want every person to feel like they belong.
Our Approach to Education
An American education doesn’t stop at the classroom — it encourages a meaningful and balanced exploration of arts, academics, and athletics.
Our Spaces to Learn
From labs to soccer fields, collaborative classrooms and dance studios, we want every space at CAISL to inspire curiosity and growth.
Our Legacy — 70 years and counting...
CAISL’s story began in 1956, as a small 9-person school with a big dream: to bring American education to an international community in Portugal.
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Discover our Legacy
From its beginnings in a small apartment in 1956 to a vibrant international campus today, CAISL’s journey reflects 70 years of growth, innovation, and commitment to American education in Portugal.
1956 Our Beginning
In 1956, with just 9 students in a small apartment in Pedrouços, Anthony McKenna founded a school with a big vision: bringing American education to Portugal.
1984 A Growing International School
As the community expanded beyond serving American families, the Portuguese Ministry of Education officially recognized the school’s educational program.
1998 One Campus, One Community
With the creation of the Linhó campus, CAISL brought its divisions together in a purpose-built learning environment designed to support the "whole child".
2026 70 years later
From 9 students to now over 700, CAISL is a thriving international community, continuing its mission; of balanced education in academics, arts, and athletics.
Start Your Journey with Us
Ready to give your child the opportunity to explore, learn, and thrive at every stage of their learning journey?
Early Childhood Ages 3 - 5
For many children, this is when they take their first steps into an exciting journey — learning with joy helps them feel confident, curious, and excited to learn.
Elementary Ages 6 - 10
As they continue their journey, students strengthen foundational skills and understanding, learning to grow with curiosity while exploring the world around them.
Middle School Ages 11 - 13
With growing independence, students begin to explore who they are, developing critical thinking, self-awareness, and meaningful connections.
High School Ages 14 - 18
Students get ready for tomorrow by setting goals and preparing for life beyond the classroom — shaping who they want to become along the way.
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