One more...

"In Hawaii, children who have gone through immersion programs are now raising children as first-language Hawaiian speakers. After nearly 40 years of effort, a language once spoken by fewer than 50 people under the age of 18 is now spoken by 18,000."

~ https://www.csmonitor.com/EqualEd/2018/0228/To-keep-the-Dakota-language-alive-a-young-woman-looks-to-preschoolers