From Kindergarten to Grade 5, the children are considered to be in the Lower School at Wetherby-Pembridge. Spanning what is known as both Key Stage 1 and 2 in the UK, pupils are encouraged to take on more responsibility as they progress throughout the school and independent learning and study skills are introduced as the breadth of the curriculum expands.

Whilst the children are in a co-educational setting for most subjects they are separated into single-sex classes for English and Maths from Kindergarten. Once pupils reach Grade 2, Social Studies is replaced by an extended Geography and World History programme and Drama and Public Speaking are incorporated into the weekly schedule. All pupils learn Latin from Grade 4, as part of the Classical Civilisation curriculum, which also covers Greek Mythology. More opportunities are provided to take part in Student Council and Debating events across the School.

By the end of Grade 5, pupils are ready to join the Middle School and families begin to explore their intended route to top High Schools in the US or Senior Schools in the UK. Families can also be prepared for the 11+ route in the UK if requested.