I am a first year student in AAU currently. Ena I took Matric last year. My stream is social science. The advice I can give you is to study hard, do questions, bcha do the best that you could. Begna gize they took the top scorers from each school. My result was the highest from social sciences in my school. Ena they took like the top 10 mnamn from my school. They did the same kehulum school. So I think it's better if you study hard and try to score the top result from your school so that you can have a better chance of placement in AAU.