My DC are 9 and 7. I am a native English speaker. DH is as well, but his parents are native speakers of another language. Unfortunately, they mostly spoke English to DH so, while he can understand pretty well, he can’t speak the language, so hasn’t spoken their language with our children. We asked the grandparents to speak their language to our DC, but they never followed through.
I am pretty strong (though not native) in a second language that I have exposed my children to a bit, but have never really focused on teaching it to them.
We were with some friends today whose DC are the same ages as ours and they are fluent in the father’s language in addition to English. My DC were lamenting the fact they are not bilingual and I feel the same way!
Is there any realistic way to start getting our DC to a high level of a second language at these ages without DH or I being fluent in one ourselves? Would this entail language classes and camps? Are there any other options?