The Reality of Class Sizes and Aide Support in International Schools
For teachers considering international school opportunities, understanding class sizes and the availability of aide support can be crucial in choosing the right fit. Class size affects not only the teacher’s workload but also the ability to provide individualized attention and foster a dynamic learning environment. Similarly, the availability of aides—whether instructional, EAL, or special needs support—plays a pivotal role in addressing diverse student needs and easing teacher responsibilities.
International School Community (ISC) members have shared hundreds of comments over the years (1240 to be exact – November 2024), providing invaluable insights into this topic. Their experiences highlight the wide range of class sizes and aide support across schools worldwide.

Understanding Class Sizes: What the Numbers Say
Class sizes at international schools can vary significantly depending on the institution, curriculum, and local factors. Here’s a snapshot of what ISC members have shared:
• Small and Manageable Classes: Some international schools maintain exceptionally small class sizes, enabling teachers to provide individualized attention and foster a focused learning environment. For instance, Hillside Collegiate IS keeps classes at no more than 12 students, creating an intimate setting that encourages active participation. Similarly, Bandung Independent School typically limits class sizes to 10–15 students, ensuring tailored instruction for every learner.
• Mid-Sized Classes with Support: At International School of Zug and Luzern, primary classes typically host 15–20 students. Each grade level benefits from an EAL teacher, offering additional learning support for language acquisition and special needs.
• Larger Classes with Varied Support: International School of Panama has seen growing elementary class sizes, with some exceeding 25 students. While schools like this may lack the one-on-one attention possible in smaller settings, they often offset this with shared aide support and co-teaching models.
Aide Support: A Vital Resource for Teachers and Students
The level of aide support varies widely across international schools. At schools like the Copenhagen International School, even primary classrooms with relatively small class sizes (13–18 students) benefit from a robust support team, including EAL and learning support teachers. On the other hand, some schools, such as the American International School Riyadh, offer minimal aide support, even for students with additional learning needs.
Notable examples of strong aide systems include:
• Utahloy International School (Zengcheng), where every primary class has dedicated teaching assistants, alongside specialized EAL and SEN coordinators.
• International School of Lusaka, which provides TAs in every Year 1–4 class and shared aides in upper primary grades.
Finding Your Fit with ISC
For teachers looking to make informed decisions about potential workplaces, ISC offers unparalleled access to firsthand accounts of class sizes and aide support across hundreds of schools. Luckily, International School Community has a comment topic on our school profile pages related to this topic of class sizes and aide support at international schools. Our teacher members shared what their experience has been working at various international schools around the world. There are a total of 1240 comments (November 2024) that have been submitted by our veteran international school teachers in one of the 73 comment topics called – “Average class size for primary and secondary. Describe any aide support.”
Highlights from ISC Member Comments:
• “In the elementary school, classrooms top out at 20 students. Junior Kindergarten to Grade 1 have teaching assistants in every classroom.” — Korea International School (Jeju) (56 total comments)
• “Primary classes are capped at 18 students, with dedicated learning support educators available for most classes.” — Verdala International School (57 total comments)
• “All primary classes have TAs, and there’s significant EAL support, although the school could benefit from additional staff for SEN.” — Utahloy International School (Zengcheng) (176 total comments)
• “ICS Elementary School now uses the HUB model where one grade level is in one big space with a couple of breakout rooms. It is also a Professional Learning Community (PLC) school so teachers and Educational Assistants collaborate to team teach. There are 4 lead teachers (one of them is a learning support teacher) and 3 educational assistants. The hub of students is divided into advisory groups (about 23 students each) for report writing and to have a communication point person otherwise students mix up and work with ALL educators during the day.” — International Community School Addis Ababa (92 total comments)
• “Each PYP has a local teacher as an additional support teacher. There are NO learning support teachers at MYP or DP even if there are kids who need help. The new learning support teachers have a tough job as the school is resistant to supporting any kids with learning needs, and most parents are in denial that their children even need support.” — Kazakhstan International School (11 total comments)
• “Max class size in EY-K sits around 16 but most are below this. 24 is max in elementary school and about the same in Middle and High School. The enrolment is growing and in Grades 10-12, some classes are still much smaller than this. EY teachers have 1 or 2 teacher aides, each Elementary School Grade has a Teacher Aide. There is also support provided by counsellors, speech pathologists, language specialists.” — Hangzhou International School (55 total comments)
With this wealth of data, ISC continues to empower educators by providing transparency and insights that make choosing the right school a more informed and rewarding process.









