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The American International School of Zagreb is located at Ul. Damira Tomljanovića Gavrana 3, 10020 Zagreb, Croatia.

PK-12: Pre-K to Grade 5 (Lower School); Middle School Grades 6-8; High School Grades 9-12; IB Diploma Program offered in Grades 11-12.

Independent, coeducational, non-profit day school

More than 40 nationalities represented.

English as an Additional Language; Learning Support; Social and Emotional Learning; Bridges program; Postsecondary advising and college counseling.

Croatia

School hours are 8:00 a.m. to 3:15 p.m.; arrival by 7:50 a.m. recommended to start promptly at 8:00 a.m.

iBus Transport; AISZ contracts with iBus Transport; parents arrange transportation directly with iBus.

The school does not offer boarding facilities.

Students do not wear uniforms.

Food services are provided by Kvatrić catering service, which operates the cafeteria and prepares fresh meals using ingredients from local farms. Lunch for students includes soup, main dish, salad and dessert; Grab & Go meals are available for students in Grades 5–12.

Governance: The School Board has full authority and responsibility for all governance matters, and the Director is responsible for the efficient operation of the School. Ownership: AISZ is legally recognized in Croatia under a Bilateral Agreement between the Governments of the United States of America and Croatia dated June 27, 2001; the AISZ Foundation was incorporated in Delaware on October 31, 1997, and AISZ operates as a private school governed by the School Board.

AISZ PK-12 curriculum is built on inquiry, fostering critical thinking, creativity, collaboration, and communication. It blends a US-influenced international framework with interdisciplinary learning and real-world problem solving. The language of instruction is English, with French and German offered as world languages; in the IB, Language A options include English, Croatian, French, German, and Chinese, and Language B options include English, French, and German (with ab initio options). English as an Additional Language, academic support, and enrichment opportunities are provided through Student Support Services. AISZ offers three diploma pathways in high school: the IB Diploma Program (Grades 11-12), the AISZ High School Diploma, and the AISZ Honors Diploma, with the Honors Diploma including a senior project. The Bridges Program provides inclusive learning for upper school students.

The average class size varies per grade level from 15-20 students.

IB Diploma Results from the last three years show an average Diploma grade of 5.2 and a range of IB scores from 24 to 45. Course offerings for Grade 11 and 12 include a broad set of DP subjects across groups, supporting a variety of student interests. All AISZ graduates earn the AISZ American High School Diploma.

Graduates have been admitted to universities across the United Kingdom and other European countries, including University College London, Durham University, King's College London, Cardiff University, University of Bristol, University of Reading, University of St Andrews, and the University of Warwick; Northeastern University London is also listed as a destination. The school provides postsecondary advising and college counseling to support this progression.

Enrichment opportunities exist as part of AISZ's support services, and the Bridges Program supports inclusive learning for diverse/upper-school students with intensive learning needs; the IB Diploma Program and Honors Diploma pathways offer advanced coursework and capstone opportunities.

MTSS guides AISZ's social-emotional learning. A dedicated social-emotional counselor works in each division to teach skills and provide support. Universal screeners identify academic and social-emotional needs to guide tiered interventions. MTSS is led by four departments: Learning Support, English as an Additional Language (EAL), Counseling and Guidance, and Academic/College Counseling. The school emphasizes that all students can learn at high levels and integrates language development with wellbeing.

AISZ has a Learning Support team serving students with gaps in learning and with mild, moderate and intensive needs. The school does not provide services such as occupational therapy, physical therapy, educational psychologist testing or other intensive services. If a child's needs reach beyond AISZ's service capabilities, the school may refer and recommend external services at extra cost. If AISZ cannot provide adequate services for the student's level of English, admission may be declined.

AISZ has English Acquisition (EAL) teachers and assistants in both the lower and upper school. The EAL program is tailored to individual student needs. Prior to acceptance as a full-time student, students may be required to take the Versant English proficiency test to determine readiness. Support is provided with in-class and outside-of-class adjustments, and the level of support decreases as proficiency improves.

Counseling and Guidance support social-emotional wellbeing and safety for every student. A robust counseling program includes a dedicated social-emotional counselor in each division to provide preventive and supportive interventions. AISZ acknowledges rising anxiety and wellbeing concerns and addresses this through proactive counseling and support.

AISZ maintains a Child Safeguarding Policy to protect students and families. Faculty and staff are mandated reporters, and safeguarding and duty of care procedures are described in policy. The school endorses the UN Convention on the Rights of the Child and views safeguarding as central to school life.

1. Grade placement, residency, guardianship, consent, and immunizations: Pre-Kindergarten is for ages 3 or 4 by December; Kindergarten is for age 5 by September 1; Grades 1–12 are placed by age on September 1, with possible adjustments communicated before acceptance. Lower and Middle School students must reside with their parents; High School students must live with a parent or legal guardian who resides in Zagreb, supported by a notarized guardianship letter. Consent from both parents is required for all grade levels, and immunization records must be up to date for admission. 2. Application timeline and required materials: Applications for the next school year are due by the end of March; deadlines are announced in December. Rolling admission is possible for the current year if submitted before March 31; applications submitted between April 1 and the last day of the school year are considered for the following school year. 3. Documentation and assessments: Enrollment requires immunization records, up-to-date documents in English, and reports from current/previous schools; documentation for learning needs may be required. Applications are not official until essential items are provided, and references must come directly from the applicant's current school; additional assessments may be requested. 4. Assessments and language screening: For Grades 6–8, non-native English speakers take an English assessment; for Grades 9–12, a Mathematics assessment and an online interview are required, along with an English assessment for non-native speakers; all assessments must be supervised by AISZ or the applicant's current school. MAP Reading and Math assessments may be required and can be conducted in AISZ or facilitated by the current school. 5. Admission decision, waitlist, and enrollment: Admissions decisions are communicated to families; if a seat is not available, the student is placed on a waiting list and the family must confirm interest to remain on the list; the waitlist is valid for one academic year and additional documentation may be required for future enrollment. 6. Enrollment steps, fees, and scholarships: An application fee is due at the start of the online application, and an admission fee is due upon acceptance; a Capital Fee is charged and discounted after several years. The school offers a Croatian Young Leaders Scholarship Program for Croatian students (grades 9–11) with a 90% tuition discount for up to four years for those meeting academic and leadership criteria; a tuition reduction program provides financial aid for eligible families in grades 1–12. After acceptance, families complete an enrollment contract, online consent, updated medical records, a physical examination form, and tuition payments; start date depends on whether acceptance is before mid-August or during the school year. 7. Start date and school year timing: If the child is accepted before the beginning of the school year (before mid-August), they may begin on the first day of school; if accepted during the school year, enrollment begins after completion of the admission steps.

AISZ offers a Croatian Young Leaders Scholarship Program for Croatian students entering high school (grades 9–11) with a 90% discount on tuition for up to four years to mature at AISZ, for citizens educated under the Croatian curriculum who meet academic and leadership, personal, artistic, sporting, or social criteria; AISZ also provides a tuition reduction program for families in financial need (financial aid) for students in grades 1–12.

If a student is accepted but no seats are available in the desired class, the student is placed on a waiting list; families must confirm their interest in remaining on the waitlist; placement on the waitlist is valid for one academic year and may require updated documentation for future enrollment; AISZ will notify families near the end of the academic year to confirm status.