Singapore has great schools. Stamford American International School is one of them. We have experience from the middle school. I think secondary school should be separated from the elementary school in this platform that oddly buts them together. Surely use of technology, academic approach, requirements for teachers, language studies and much more differer in comparison to elementary school.
Anyhow, we feel our children are well challenged, have good teachers, have really good tools at use, enjoy fresh campus facilities, have large variety of afterschool activities and good sport teams to join. Sport facilities are great, too.
Too structured environment can kill creativity and innovativeness. SAIS supports students own thinking and self expression.