**I partnered with Prime School International to write this post. All opinions are my own.
When Edite Reina, a French-born diplomat then serving as consul for Costa Rica in Portugal, sat down with her engineer husband to reimagine what education could look like, they didn’t start with a vision of making the fanciest campus or offering high-end sports facilities to the students. They were thinking about their three children and the gap between what classrooms were offering and what the world was beginning to demand. That conversation ultimately became Prime School International in Portugal, founded in 2007, and now one of the country’s most respected international schools with three campuses spread across Alvalade in Lisbon, Estoril next to Cascais, and the nearby hills of Sintra.
Ms. Reina, who today serves as CEO and Executive Director of Prime School International in Portugal, grew up in France in the 1960s and experienced firsthand an educational model built entirely around the teacher as the sole authority on the truth and what was important for students to absorb in the classroom. Rote memorization was encouraged in every classroom. Students were asked to regurgitate facts and figures, often not being asked how the subject matter related to the world they saw around them. Students were graded on their ability to reproduce information rather than understand it. There was no internet, no way to cross-reference what a teacher said, no culture of inquiry. “What was important was the results, the grades,” she has said of that era. “It was not important if you understood.”
Her husband, an engineer with connections to the European Space Agency, shared her conviction that the future would require something different: students who could think, adapt, and apply knowledge to real problems. Together they saw an opening in Portugal’s international education landscape. At the time, the country had very few international schools and none operating under the Cambridge Curriculum. Prime School International in Portugal was established to fill that void, built on the belief that education should be practical, personal, and purposeful. The school received its Cambridge International accreditation in 2009, expanded to a second campus in Estoril in 2019, and opened its flagship Lisbon campus in the Alvalade district in 2023. Today the institution employs more than 250 professionals across its teaching, technical, and administrative teams.
An Aerospace Mindset Applied to Education
One of the most distinctive aspects of Prime School International in Portugal is the intellectual framework its founders brought to the project. Edite and her husband did not simply import an already-existing curriculum and open a school. They applied the kind of precision-oriented thinking that comes from aerospace engineering to the design of educational management. The school’s quality systems are modeled on industrial processes used in aviation and space industries, which is part of what led to its ISO 9001:2015 certification, an externally audited, continuously improving quality standard that Prime became the first private international school in Portugal to earn.
This ethos runs through the daily work of the school. Carlos Miguel Almeida, the school’s quality director, has described the approach in concrete terms: each student has clearly defined objectives, measurable benchmarks, and continuous multidisciplinary monitoring. Every student’s progress is tracked, and no student goes through the system unnoticed. The certification extends across all three campuses and covers both academic operations and the boarding program.
The Prime Scientific Method and the Prime Program
Central to everything Prime School International in Portugal does is its proprietary Prime Scientific Method, an approach designed to decode each student’s individual cognitive and emotional profile and construct a learning journey around it. Alongside this sits the Prime Program, which integrates AI and STEM-focused projects from the earliest years of schooling, which ensures that students build both the analytical habits of mind and the practical confidence to apply what they learn.
The school’s philosophy insists that academic excellence and human development are not separate goals. CEO and Executive Director Edite Reina has summarized this as a commitment to excellence and the formation of genuine leaders rather than students who simply perform well on examinations. In practice, this means that the school invests in resident psychological support, developing an international mindset and strong ethics in addition to the standard academic curriculum.
A School Built around the Cambridge Pathway
Prime School International was one of the first international schools in Portugal to implement the Cambridge Pathway, a globally recognized framework that takes students from Early Years at age three through to A Levels at age 19. Prime received its Cambridge accreditation in 2009 and has delivered the full pathway for more than fifteen years.
Cambridge Early Years introduces children to learning through play, covering language, mathematics, creative expression, physical development, and an understanding of the world around them. Cambridge Primary expands this into a broad curriculum including English, Science, Computing, Arts, Music, and Physical Education. Cambridge Lower Secondary deepens the work across more than ten subjects, building critical thinking and culminating in internationally benchmarked Checkpoint assessments. The IGCSE years, widely regarded as the world’s most popular international qualification for students aged 14 to 16, offer more than 70 subject choices. At the top of the pathway, Cambridge A Levels, studied in three to four subjects at depth, serve as the gold standard for university entrance across the globe.
The Cambridge Curriculum is recognized by more than 2,350 universities across 90 countries including Oxford, Cambridge, Harvard, and MIT. The school’s current university placement rate is 97%, and Prime students consistently progress to Russell Group institutions, Ivy League universities, and other leading programs worldwide.
Three Campuses, Three Distinct Personalities
While the three Prime School International campuses share a curriculum, a philosophy, and a set of core values, each has developed its own distinctive character shaped by its location and the students it attracts. All three are easily accessible from across the greater Lisbon metropolitan area, and families are welcome to arrange a private tour or virtual campus visit through the school’s website.
Prime School Lisbon – The Alvalade Campus
The Lisbon campus is located in Alvalade, one of the capital’s most distinguished residential neighborhoods easily accessible by metro on Lisbon’s Green Line. Opened in 2023, it serves students from age three to 18 and is the newest of the three campuses.
What makes the Alvalade campus truly stand out is its boarding program, one of the most comprehensive available at any international school in Portugal. Prime Boarding Lisbon is designed for students aged 13 to 18 and goes far beyond standard dormitory accommodation. The residence offers 120 premium suites in twin and quad configurations that all feature designer study areas. Students have the opportunity to live with their peers from more than 30 countries, which prepares them for life at university in the future.
The structure of residential life is designed to develop the whole student. Mornings begin at 7:00 am with optional sunrise fitness or mindfulness sessions followed by a chef-prepared breakfast. In the afternoons, students can attend guided study labs led by Cambridge curriculum teachers and university counselors. In the evenings, students have dinner together, and the days end with quiet reading time, a digital curfew, and sleep routines designed to support their academic performance. Wellbeing is taken seriously throughout: the boarding house is staffed around the clock with a nurse, a safeguarding officer, and a resident psychologist. Parents have access to a live family portal that provides updates on attendance, meal choices, progress notes, and photo highlights.
The annual residence fee is €22,000 per year excluding academic tuition, and includes five daily meals, weekly laundry and housekeeping, study coaches, career mentoring, and transport between the Lisbon, Sintra, and Estoril campuses. Weekend cultural and outdoor adventures in and around Lisbon are also included. When combined with annual academic tuition, the total cost of a boarding place at Prime Lisbon is broadly comparable to leading British boarding schools, but within one of Europe’s safest capital cities. The boarding program carries the same ISO 9001 certification as the academic campuses independently verified by SGS.
Beyond boarding, the Alvalade campus benefits from its position at the center of Lisbon’s cultural and professional life. Students have access to the city’s arts, technology, and sports ecosystem as a natural extension of their education. Strategic partnerships with organizations including Les Roches and the Pestana Hotel Group extend the learning environment into real-world professional settings and give students connections and experiences that go well beyond what a classroom can provide.
The BTEC Vocational Program
The Alvalade campus is also an approved Pearson BTEC center that extends the educational journey into higher national qualifications.
BTEC stands for Business and Technology Education Council. It is a vocational qualification framework originally developed in the United Kingdom and now awarded internationally through Pearson, the global education company. Rather than preparing students primarily through exams and theoretical coursework, BTEC programs are built around practical, industry-relevant learning: assignments, projects, and real-world work experience in a specific field. They are available at multiple levels, from the equivalent of GCSEs all the way up to the equivalent of a foundation degree, and they are widely accepted by universities and employers as a credible alternative to the traditional A Level route for students who learn better by doing than by sitting examinations.
The Alvalade vocational programs offered through Prime School reflect a founding conviction that academic and vocational education deserve equal respect. A student taking a BTEC receives an education that integrates real industry experience from day one, places students inside companies, and ensures they graduate with genuine professional credentials rather than theory alone.
The Alvalade BTEC program offers programs from Level 2 through to Level 5 that cover Business, Applied Science, Health and Social Care, Computing, E-sports, Fashion and Textiles, Fine Art, Interior Design, Architectural Technology, Marketing, Policing, Sport, and Travel and Tourism.
Prime School Estoril
The Estoril campus opened in 2019 and serves students from age three to 18, with a particular emphasis on sport, arts, and sciences. Students here benefit from the physical and mental grounding that comes from learning in a genuinely beautiful natural environment between the Atlantic coastline and the Sintra mountain range in the town of Alapraia, and the campus has developed a strong culture around sports and the natural environment that complements the rigorous Cambridge academic program.
The campus of Estoril apart has some truly unique facilities including a flight simulator, the only one you will find in any international school in Portugal, inspired by the founder’s certification as trained pilots. For students interested in aviation, aerospace, or engineering, the simulator provides hands-on exposure to applied science that most schools cannot offer at any price. It is the kind of resource that speaks to the founding DNA of the institution: a school built by people with aerospace and scientific backgrounds who believed that education should have a real-world connection.
Perhaps even more remarkable is the approach to university guidance. The Estoril principal personally walks each student through the university application process from start to finish, creating a genuine one-on-one coaching relationship in which the principal assesses each student’s academic strengths, ambitions, learning style, and life goals, then works with them individually to identify the university programs that will serve them best. This process reflects the same founding philosophy that shaped Prime from the beginning: no student should be invisible, and every student deserves a path designed around who they actually are.
Prime School Sintra
The Sintra campus is where Prime School International’s story began. Founded by Edite Reina and her husband in 2008 in Portela de Sintra, it was the original expression of their vision for what education could become. Today it serves students from the first year of formal schooling (age 4-5) through to Year 9 and is structured around two bilingual pathways: Cambridge delivered in English + German, or Cambridge delivered in English + French. Portuguese is offered as an extracurricular activity.
For families with ties to Germany or France, or for parents who want their children to develop genuine trilingual fluency from an early age, the Sintra campus provides a structured pathway. Class sizes are intentionally kept small in order to ensure that every child receives the personalized attention that builds both confidence and capability.
Students who begin their journey in Sintra and stay until Year 9 can then continue their education at either the Estoril or Lisbon campus, where they move through the IGCSE years and on to A Levels before progressing to universities around the world. The continuity of the Cambridge Pathway makes this transition, and families who start in Sintra enter a community accustomed to welcoming students from dozens of countries and guiding them all the way through to university.
What Makes Prime School Different
There is no shortage of international schools in the Lisbon area. Several offer impressive campuses with large sports complexes and cutting-edge facilities. While Prime School International in Portugal may not offer the most premium facilities in terms of architecture, it offers instead something considerably rarer and, for many families, ultimately more valuable.
The student-to-teacher ratio at Prime is among the lowest available in the region. In practical terms, this means teachers actually know every student on a first-name basis. They are keenly aware of each student’s special mix of abilities and struggles. They are able to adapt each student’s learning to their interests and meet them where they are. This is the promise at the core of the Prime methodology: a proprietary approach that combines the rigor of Cambridge with real-time personalized tracking through an integrated digital platform.
To give one example of how Prime School can develop a student’s interests. Ms. Reina described the case of a student who wanted to become an actress and whose father worried that the school lacked a formal drama program. Rather than dismissing the concern, the school had a meeting, consulted its teachers, and designed a tailored approach: additional English instruction, literature chosen to engage the student’s theatrical instincts, and a challenge to produce a performance entirely under the student’s own direction. The following Christmas, the student organized and directed a full production, designed the costumes with her mother, built the set, and cast her classmates in every role.
This kind of responsiveness is at the core of how Prime operates. The school firmly believes that the purpose of education is to develop human beings who understand why they are learning, where their knowledge will take them, and who they want to become.
Supporting Every Students with Special Educational Needs
One of the areas where Prime’s philosophy is most clearly visible is in its approach to students with Special Educational Needs (SEN). At a time when many schools treat SEN students as logistical challenges rather than learners to be developed, Prime has built a comprehensive and individualized program around dedicated teachers who work with each SEN student. Teachers adapt materials to match each student’s learning style while specialists in psychology, sensory processing, and developmental support provide targeted one-on-one work in addition to integration into the main classroom.
Joining a School School That Feels Like a Family
When parents and staff are asked to describe Prime School International in Portugal, they often say that the school feels like a family. This comparison is not accidental. It was the deliberate design of a founder who started the project because she was dissatisfied with what conventional education was doing for children, and who believed that getting it right meant building a place where each children could be heard, encouraged to grow, and not be ignored.
Prime School International is not the flashiest school in the Lisbon area. It does not have the largest sports complex or the most elaborate campus architecture. What it has is more than fifteen years of accumulated experience, a Cambridge curriculum recognized by the world’s leading universities, a proprietary methodology built around knowing each student as an individual, an ISO 9001 certification that independently verifies its quality across all three campuses, a flight simulator in Estoril that no competitor can match, university guidance of rare personal depth, and a boarding program in Lisbon at the Alvalade campus that gives international students a genuine home. Behind all of it is a CEO who still believes, with the conviction of someone who has watched hundreds of young people grow up inside this institution, that education has one purpose: to help students understand who they are, what they are capable of, and where they are going.
Families interested in any of the three Prime campuses can contact the school at [email protected] or by calling +351 21 923 54 96. For inquiries regarding admission, please contact [email protected]. Virtual tours of all three campuses, full curriculum details, and information on fees and open days are available at www.primeschool.pt.
