Also, a county closing all schools for several years lead to significant drops in IQ scores[1]. [1] https://www.jstor.org/stable/2294274?seq=1#page_scan_tab_co

Also, a county closing all schools for several years lead to significant drops in IQ scores[1]. [1] https://www.jstor.org/stable/2294274?seq=1#page_scan_tab_contents https://www.jstor.org/stable/2294274?seq=1#page_scan_tab_con...