I learned at ASTU and my bestie was at AASTU. So the difference is the grading system. I heard AASTU arif grade lemamtat it's easy. If you can actually do good at ASTU, it's a good place to learn. Fresh year kebad new. Especially if you're ye Addis lej. My advice to you is 1, study smarter not harder. 2, make friends who don't stress out about exams and shit and also who match your vibe. 3, it's ok to have fun sometimes. And most importantly F mamtat normal new. So don't fucking stress out