Goods and bads about exams

I find that exams are a good way to see if we can cope with our studies. But i find that too many exam are too stressful. 4 exams a year! Can't they make it 2 exams a year?I think our education system strengths is that students can excel in their studies but what i do not like about the system is that it is too stressful and that there is to much homework and exams. but Singapore has been doing well in international competitions . I think this is because our education system is very good and that we can excel in our studies. And their is also people from overseas coming to study in Singapore. Why? I think this is because people think singapore education system is good. Overall, i think that studying in Singapore is very good as i can excel in my subjects.