I've just been to a presentation for a bilingual preschool/school as I'm toying with the idea of sending my DD there next year. DD (2.6) is bilingual English/Italian although English is her minority language at present as I'm the only influence (DP and nursery both Italian), hence my interest in perhaps consolidating her English by increasing exposure to it. It was just an idea as I wasn't entirely convinced it was necessary (plus it's v. expensive), particularly as we travel quite frequently to the UK to visit relatives or they come to us.
However, at the presentation this morning I was told that the OPOL method where only one parent speaks the language is insufficient once past the early years as the child doesn't get to develop the language beyond a purely social context and would have problems expressing themselves in the future in an academic or work context. Is this true or total bolleaux? Has anyone any direct experience with themselves or older DCs?