What curriculum are you following, national Singapore, O levels, GCSEs-GCE…?
What’s your budget?
Is your school open access (ie., any 5 year old who starts in kindergarten can attend our school provided they live nearby) or selective (students need to do well in primary or middle school, perhaps in specific subjects, or take an exam or have an interview to enter the school)? Can students be “cut”, or sent to another school if their results aren’t “good enough”?
What type of colleges do students typically atrtend? Is going to college after your school a given?