International School of Oman
Key Stats
Annual Fees: US$6K - US$11K
Curriculum: British
Age Range: 4-18
Students: N/A
Location: Other Muscat, Muscat
Updated April 2026
In Brief
ISO is the most accessible fee option among Muscat's established British curriculum schools, and worth a serious look for families who want IGCSE and A-Level pathways without paying BSM or MIS prices. Ask about teacher quality consistency on your visit - the review base is mixed on that point.
International School of Oman sits in Bosher, near the Ministry of Information, and has built a recognisable presence in that part of Muscat over the years. It offers the British national curriculum from KG1 through Grade 12, with IGCSE and A-Level as the leaving qualifications. The 2025-2026 fee schedule - published on the school website as a PDF - runs from OMR 2,331 in KG1 to OMR 4,347 in Grades 11-12. That positions ISO as one of the most affordable full IGCSE-to-A-Level schools in Muscat, below AGS in the primary years and at a similar level at senior stage. The campus has two temperature-controlled swimming pools, a full-size gymnasium, and outdoor courts for football, basketball, and volleyball.
Parent reviews from 2023 and 2024 on International Schools Database are positive - parents in the KG years in particular describe teachers who have been there a long time and a school where children flourish academically and socially. A student review from 2021 noted a more mixed picture, describing strong academics but inconsistent teacher quality and facility maintenance. The school describes a strong university placement record and has sent graduates to institutions worldwide. The admissions process includes placement tests in English, Maths, and Arabic, and an interview for younger year groups.
Bosher is a residential area on the western side of Muscat, accessible from Al Seeb and Ghala but a meaningful drive from MSQ or Qurum at peak times. The school provides a bus service. Books, uniforms, and lunch are additional to tuition. For new students, a one-time registration fee (OMR 100), consumables (OMR 150), and development fee (OMR 150) apply on top of tuition. The value proposition is clear for families who are cost-conscious and want a full British pathway; the key question to press on is teacher continuity in secondary years.
What parents value
- –Among the most affordable full IGCSE and A-Level programmes in Muscat, with fees from OMR 2,331 in KG1 to OMR 4,347 in Grade 12. One-time entry costs are modest compared to BSM or ABA.
- –Two temperature-controlled swimming pools, full-size gymnasium, and outdoor sports courts on campus. School bus service available across Muscat.
- –Positive recent parent feedback on early years teaching, with mentions of long-serving teachers who know children well. Graduates placed at universities worldwide.
Points of consideration
- –Teacher quality has been described as inconsistent in some reviews, particularly at secondary level. Ask about staff turnover rates and how long current secondary teachers have been in post.
- –Bosher location suits families in the western Muscat corridor but adds travel time from MSQ, Qurum, or Madinat Al Sultan Qaboos. Map the commute before enrolling, particularly if you're relying on the school bus.
Annual Fees
| Year Group | Age | USDTotal Annual Fee |
|---|---|---|
| Kindergarten I | 4 | NaN |
| Kindergarten II | 5 | NaN |
| Grade 1 | 6 | NaN |
| Grade 2 | 7 | NaN |
| Grade 3 | 8 | NaN |
| Grade 4 | 9 | NaN |
| Grade 5 | 10 | NaN |
| Grade 6 | 11 | NaN |
| Grade 7 | 12 | NaN |
| Grade 8 | 13 | NaN |
| Grade 9 | 14 | NaN |
| Grade 10 (IGCSE) | 15 | NaN |
| Grade 11 (A-Level) | 16 | NaN |
| Grade 12 (A-Level) | 17 | NaN |
Fees converted from OMR. For the most up to date and accurate figures please double check with the school.
Additional Fees
| Fee | Amount |
|---|---|
| Registration Fee | NaN |
| Consumables | NaN |
| Development Fee | NaN |
Academic Results
Academic results have not been made publicly available by this school.
Extra Curriculars
Contact the school for details on co-curricular activities and facilities. Ask what a typical week looks like outside lessons for your child's interests.
Inspections & Accreditations
Inspection
No published inspection details are currently available.
Accreditations
Accreditation details are not publicly listed.
Memberships
Membership details are not publicly listed.
Student Body
Muscat's international schools serve a highly diverse student body drawn from the city's large expatriate community and locally based families. Contact the school for current enrolment details.
Leadership
School leadership
Contact the school for current leadership details.