The spread of coronavirus disease 2019 (COVID-19) has caused school closures in most countries, affecting over 90% of the world’s student population. School closures can widen learning inequalities and disproportionately hurt vulnerable students. We collected data on the exam scores of...

The Republican Party has been the party most supportive of free trade in American politics for half a century. Donald Trump, the 45th US president, held a different stance from his party on free trade. We assess how Trump's China tariffs in mid-2018 impacted the performance of his party in its...

The spread of coronavirus disease 2019 (COVID-19) has caused school closures in most countries, affecting over 90% of the world’s student population. School closures can widen learning inequalities and disproportionately hurt vulnerable students. We collected data on the exam scores of...

The spread of coronavirus disease 2019 (COVID-19) has caused school closures in most countries, affecting over 90% of the worlds student population. School closures can widen learning inequalities and disproportionately hurt vulnerable students. We collected data on the exam scores of university...