These programs typically produce better outcomes for language acquisition and cultural growth. A lot of people say that students learn a lot in their native language. It is really about learning the content that they are teaching and the different students transition into a new language as the course advances.
Another benefit to this specific program is that these programs can be very cost effective. This is due to the fact that dual language programs can reach those students that need to increase literacy efficiency within the confines of a traditional classroom. Another edge is that studies have shown that these types of programs are more effective at closing the educational performance/achievement gap than other bilingual type of programs. In these programs, the foreign language students scored better than those in other bilingual programs. Another benefit is that most studies suggest that learning one’s native language first when they are really developing reading and comprehension skills in turn increased their ability to learn in their respective foreign language.
The disadvantage is that this type of program requires a lot of start up capital. With that being said, a ton of grant money needs to be raised in order to effectively open up a dual language school/program. Not to mention, finding teachers that are bilingual can be exceedingly challenging, as well.