Undergraduate education in state universities is free but extremely competitive, limited and standardized. Fewer than 16% (less than 16,000 students) of those who qualify get admission to state universities and of that only half graduate. Admission to the university system is based on the highly competitive GCE Advanced Level examination. Selection of students is done on the basis of rank order on average Z Scores obtained by candidates at the GCE Advanced Level under a transparent national policy to replicate a district basis representation. Only the top students from each district get admissions.