Only students with a very high performance on the Kenya Certificate of Primary Education are selected to attend. The school also participates in the national quota system that sees a balance in admission of students from all Kenyan Districts. In 2015, Alliance Girls High School attracted the highest number of applicants out of all the national schools with 156,347 applications, followed by the Alliance High School with 154,417 and Mangu High School with 148,594.[9][10]