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Schools/Compare/CDL vs ISA

CDL vs ISA

A detailed side-by-side comparison of two leading Swiss boarding schools. See how they compare on tuition, curricula, student body, facilities, and more.

Collège du Léman

Versoix, Geneva
Founded 1960
1900 students
120 nationalities
From CHF 25’000
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International School Altdorf

Altdorf, Uri
Founded 2016
80 students
20 nationalities
From CHF 55’000
View Full Profile
Category
CDL
ISA
General
Founded1,9602,016
LocationVersoix, GenevaAltdorf, Uri
Altitude380m450m
Gender Policyco-edco-ed
Age Range2–1813–19
Campus Size8 hectares2 hectares
Academics
CurriculaIB, AP, French Baccalaureate, Swiss Matura, High School DiplomaIB
Teaching LanguagesEnglish, FrenchEnglish
Average IB Score3336
Student:Teacher Ratio1:71:6
AccreditationsCIS, IB, NEASC, College BoardIB
Student Body
Total Students1,90080
Boarding Students25040
Day Students1,65040
Nationalities12020
Fees & Costs
Tuition (from)CHF 25’000CHF 55’000
Tuition (to)CHF 95’000CHF 75’000
Registration FeeCHF 2’500CHF 1’500
DepositCHF 10’000CHF 8’000
Hidden Fees (annual)CHF 9’500CHF 4’000
True Annual CostCHF 104’500CHF 79’000
Features
Summer Program
Viewbook Available

CDL — Facilities

Aquatic CenterPerforming Arts CenterScience WingSports ComplexTennis CourtsFootball PitchesLibrary

Sports

SwimmingTennisFootballBasketballGymnasticsSkiingSailingGolf

ISA — Facilities

Modern CampusScience LabsIT CenterSports HallStudent ResidenceLibrary

Sports

FootballBasketballSwimmingSkiingHikingClimbingVolleyball

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Collège du Léman vs International School Altdorf: Which Is Right for Your Family?

Both Collège du Léman (founded 1960) and International School Altdorf (founded 2016) are among Switzerland's most respected boarding schools. Located in Versoix, Geneva and Altdorf, Uri respectively, each offers a distinctive approach to education.

Academics: CDL offers IB and AP and French Baccalaureate and Swiss Matura and High School Diploma curricula, while ISA provides IB. IB scores average 33 and 36 respectively.

Cost: Annual tuition starts at CHF 25’000 for CDL and CHF 55’000 for ISA. Including hidden fees, the true annual cost is approximately CHF 104’500 and CHF 79’000.

Community: CDL has 1900 students from 120 countries, while ISA has 80 students from 20 countries. Both maintain small class sizes with student-teacher ratios of 1:7 and 1:6.