Yes, this is called Small Beer or Table Beer in Belgium. It goes as low as 1% and was very normal in schools and at homes before clean water was a common thing.
It still is a very popular beer to drink while you eat but children don't consume it anymore. My father did tell me that when he was younger (1970-1980) they still drank it at the table in his school.
I don't know when the rules changed but when I was a child in England in the sixties anything less than 2% could be sold to anyone, it wasn't regarded as properly alcoholic. The brand I remember is Top Deck Shandy, half and half lemonade and light beer.
It still is a very popular beer to drink while you eat but children don't consume it anymore. My father did tell me that when he was younger (1970-1980) they still drank it at the table in his school.