Re: 20 million sounds a lot
"then 20 million individual records suggests 40 years worth of data."
Or, you know, everyone who has been at school since 2000, as it says in the article, so everyone back to 1982, more or less. 2016-1982=36.
"then 20 million individual records suggests 40 years worth of data."
Or, you know, everyone who has been at school since 2000, as it says in the article, so everyone back to 1982, more or less. 2016-1982=36.