However , several families found the car - free and safe island a good place to raise children .
In the early 1970s , the population reached an all - time low , and the school survived a year or two with only two pupils .
Several families found the car - free and safe island a good place to raise children .
In the early 1970s , the population reached an all - time low , and the school survived a year or two with only two pupils .