According to Wikipedia, bilingual education involves teaching academic content in two languages, in native and secondary language with varying amounts of each language used in accordance with the program model.
When I am in form 1 until form 5, I learnt Mathematics and Science in English. But the teachers teach us in two language which are Malay and English. This is because we are not familiar in this form of teaching. Our Mathematics and Science exam papers also have English and the translation in Malay.
For me, bilingual education has many benefits to youngster. This is because they can improve their English in future.
What can I see in my college, students that do not learnt English in Mathematics and Science subjects, they have difficulties in learning the subjects at college. This is because all the subjects at the college are all in English except for few subjects in Malay.
Nowadays, most jobs requires the candidates that can talk in English. Many people said that bilingual education is not good because they thought that the young generation would forget their native language. But they are wrong.
If they can improve their English, not surprising at all they can succeed in future. Not in Malaysia, but world wide.