The following Schools are Accredited by CIS.

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 School NameCityCountryEnrolment
The American Academy for GirlsKuwait cityKuwait 830
The Dwight SchoolNew York, NYUnited States 571
Anglo-American School of MoscowMoscowRussia 1250
Anglo-American School of SofiaSofiaBulgaria 253
Academia Británica CuscatlecaSanta TeclaEl Salvador 1400
The American Creativity Academy Kuwait 2300
Adelaide High SchoolAdelaide, SAAustralia 1222
Adelaide Secondary School of EnglishAdelaide, SAAustralia 413
American International School, LusakaLusakaZambia 496
Aiglon CollegeChesièresSwitzerland 360
The American International School of MuscatMuscatOman, Sultanate of 602
American International School of BudapestBudapestHungary 802
The International School of NiceNiceFrance 320
The International School FlorenceFlorenceItaly 439
International School of Luxembourg Luxembourg 833
American International School RotterdamRotterdamNetherlands 232
American International School ViennaViennaAustria 788
Zurich International SchoolZurichSwitzerland 1313
Al-Bayan International School Kuwait 1814
International School Hilversum 'Alberdingk Thijm'HilversumNetherlands 448
Al Nahda International SchoolsAbu DhabiUnited Arab Emirates 4408
American International School - ChennaiChennai (Madras)India 620
Amman Baccalaureate SchoolAmmanJordan 990
American Institute of MonterreyMonterreyMexico 1302
Colegio Anglo-ColombianoBogotáColombia 1672
Annesley CollegeWayville, SAAustralia 526
Antwerp British SchoolAntwerpBelgium 185
Antwerp International School,vzwAntwerpBelgium 553
International School of AberdeenAberdeenUnited Kingdom 490
American International School of BucharestBucharestRomania 613
American School in LondonLondonUnited Kingdom 1337
American School of ParisParisFrance 790
The American School In SwitzerlandLuganoSwitzerland 521
Atlanta International SchoolAtlanta, GAUnited States 912
The Awty International SchoolHouston, TXUnited States 1185
Bangalore International SchoolBangaloreIndia 270
Bandung International SchoolBandungIndonesia 244
Bangkok Patana SchoolBangkokThailand 2136
Banksia Park International High SchoolAdelaide, SAAustralia 692
Batu Hijau International SchoolBuin Batu, SumbawaIndonesia 28
Bavarian International SchoolMunichGermany 700
Bendigo Senior Secondary CollegeBendigo, VictoriaAustralia 1718
Benowa State High SchoolBenowa, Gold Coast, QldAustralia 1592
Benton Junior CollegeMornington, VictoriaAustralia 588
International School of BergenBergenNorway 200
Berlin Brandenburg International SchoolBerlinGermany 580
Bonn International School e.V.BonnGermany 570
American School of BilbaoBilbaoSpain 326
Bilkent University Preparatory School/Bilkent International SchoolAnkaraTurkey 450
British International SchoolJakartaIndonesia 1300
Bishop Mackenzie International SchoolsLilongweMalawi 654
Oslo International SchoolOsloNorway 568
Black Forest AcademyKandernGermany 345
Bordeaux International SchoolBordeauxFrance 78
British School of ChicagoChicago, ILUnited States 429
Brighton Primary SchoolVictoriaAustralia 749
Brillantmont International SchoolLausanneSwitzerland 140
The British School, New DelhiNew DelhiIndia 608
Brookhouse International SchoolNairobiKenya 500
The British School of BrusselsBrusselsBelgium 1245
British School, CaracasCaracasVenezuela 240
The British School of Costa RicaSan JoséCosta Rica 908
The British School, Rio de JaneiroRio de JaneiroBrazil 1584
Özel Büyük KolejAnkaraTurkey 979
Cambridge Primary SchoolMelbourneAustralia 628
Carey Baptist Grammar SchoolMelbourne, VictoriaAustralia 2286
Caroline Springs CollegeMelbourne, VicAustralia 2388
Caulfield Junior CollegeMelbourneAustralia 393
Cebu International SchoolCebu CityPhilippines 464
Cedar International SchoolTortolaBritish Virgin Islands 259
Chinese International School, Hong KongHong Kong (SAR)China 1410
Copenhagen International SchoolCopenhagenDenmark 600
Cleveland District State High SchoolCleveland, QldAustralia 1078
Collège Alpin Beau SoleilVillars-sur-OllonSwitzerland 185
Colegio ColumbiaTampicoMexico 864
Colegio InglésMonterreyMexico 1678
Colegio Gran BretañaBogotáColombia 276
Collège Du Léman International SchoolGenevaSwitzerland 1952
Collingwood CollegeVictoria 3067Australia 556
Colegio Los NogalesBogotáColombia 936
International School of LausanneLausanneSwitzerland 608
Concordian International SchoolBangkokThailand 361
Craigslea State High SchoolQldAustralia 812
Dubai American AcademyDubaiUnited Arab Emirates 2150
International School DakarDakarSenegal 320
Dasman Model School Kuwait 1060
American International School/DhakaDhakaBangladesh 693
International School, DhakaDhakaBangladesh 579
British International School, PhuketPhuketThailand 905
Ecole Internationale de Boston / International School of BostonBoston, MAUnited States 500
El Gouna International SchoolRed SeaEgypt 155
The English AcademyKuwaitKuwait 1000
Escuela Campo AlegreCaracasVenezuela 619
Eyüboğlu SchoolsIstanbulTurkey 2161
Foundation of The Int'l School of GenevaGenevaSwitzerland 4060
International School of Geneva (La Grande Boissière)GenevaSwitzerland 1927
International School of Geneva (La Châtaigneraie)GenevaSwitzerland 1168
International School of Geneva (Campus des Nations)GenevaSwitzerland 965
Flora Hill Secondary CollegeBendigo, VictoriaAustralia 1117
Franconian International SchoolErlangenGermany 396
Frankfurt International School (FIS) / International School Wiesbaden (ISW)FrankfurtGermany 1858
French American International SchoolSan Francisco, CAUnited States 945
Garden International SchoolKuala LumpurMalaysia 1964
Ghana International SchoolAccraGhana 1142
American School of The HagueThe HagueNetherlands 1100
Harare International SchoolHarareZimbabwe 452
Harristown State High SchoolToowoomba, QldAustralia 1489
Harrow International SchoolBangkokThailand 1221
International School of HavanaHavanaCuba 220
New Cairo British International SchoolCairoEgypt 650
Hiroshima International SchoolHiroshimaJapan 150
Hisar Educational Foundation SchoolsIstanbulTurkey 1094
Hong Lok Yuen International SchoolHong Kong (SAR)China 360
International School of HyderabadHyderabadIndia 174
Prem Tinsulanonda International SchoolChiang MaiThailand 466
International Community School, AbujaAbujaNigeria 253
International College SpainMadridSpain 682
The Inter-Community School ZurichZürichSwitzerland 831
International School of EstoniaTallinnEstonia 122
International School of MontereyMonterey, CAUnited States 385
Indooroopilly State High SchoolIndooroopillyAustralia 918
The International School of MonacoMonte CarloMonaco 380
International College, BeirutBeirutLebanon 3349
International Preparatory SchoolMapouMauritius 331
International Community School of AbidjanAbidjanCôte D'Ivoire 44
International School of AmsterdamAmsterdamNetherlands 905
The International School of Azerbaijan, Baku (AIOC-TISA)BakuAzerbaijan 519
International School of the Basel Region (AG)BaselSwitzerland 1107
International School of BeijingBeijingChina 1936
International School of BelgradeBelgradeSerbia 353
International School of BerneBerneSwitzerland 285
International School BruneiBandar Seri BegawanBrunei Darussalam 923
International School of BrusselsBrusselsBelgium 1476
International School of the Sacred HeartTokyoJapan 604
International School of Düsseldorf e.V.DusseldorfGermany 950
International Secondary School EindhovenEindhovenNetherlands 255
International School EerdeOmmenNetherlands 129
The International School of the Gothenburg RegionGothenburgSweden 838
International School HamburgHamburgGermany 650
International School of HelsinkiHelsinkiFinland 296
International School, Ho Chi Minh CityHo Chi Minh CityVietnam 980
International School of LatviaJurmalaLatvia 215
International School of LondonLondonUnited Kingdom 338
The International School of LusakaLusakaZambia 667
International School, ManilaManilaPhilippines 1850
The International School of NaplesNaplesItaly 293
International School of ParisParisFrance 652
International School of Phnom PenhPhnom PenhCambodia 516
International School of PraguePragueCzech Republic 780
International School of BusanBusanKorea, South 215
Sotogrande International SchoolSotograndeSpain 680
Stockholm International SchoolStockholmSweden 420
Istanbul International Community SchoolIstanbulTurkey 468
International School of TanganyikaDar es SalaamTanzania 930
International School of Turin (ACAT)TurinItaly 365
Jakarta International SchoolJakartaIndonesia 2474
Aoba - Japan International SchoolTokyoJapan 435
St John's International SchoolWaterlooBelgium 920
Kampala International SchoolKampalaUganda 330
Kawana Waters State CollegeVictoriaAustralia 966
Kedron State High SchoolWooloowin , QldAustralia 1016
Kenmore State High SchoolBrisbaneAustralia 1620
International School of KenyaNairobiKenya 655