Thika Primrose School was first conceived as a nursery school in 1998 with just three kindergarten students, but demand for it to expand to a primary school saw the school open its doors to lower and eventually upper primary class students.
The school produced its first KCPE class in 2009, just 11 years after it was founded. These first set of students performed exceptionally well, and the school's popularity grew immensely. Since then the school has continued to perform well, and this has ensured a steady stream of new students. Thika Primrose School has now earned a reputation of being one of the top performing schools in the area.