Just as economists try to avoid admitting that the law of supply and demand applies to the topic of immigration, educationists try to avoid admitting that the laws of arithmetic apply to immigration and school performance. But now there’s an exception, in Sweden, of all places:

From the Daily Mail:

Migrant crisis to blame for falling standards in Swedish schools, say officials

Increasing number of teens fail to qualify for Swedish upper secondary Unqualified students up from ten per cent in 2006 to more than 14 in 2015 Education Agency say foreign-born students fail to catch up with Swedes Of 163,000 migrants welcomed to Sweden in 2015, 43 per cent were minors By SARA MALM FOR MAILONLINE PUBLISHED: 12:04 EST, 14 March 2016 | UPDATED: 13:42 EST, 14 March 2016

The increase of foreign-born children in Swedish schools has played a part in the country’s overall decline in educational achievement and test scores in recent years, officials report.

The number of teenagers who failed to qualify for upper secondary school in Sweden increased from ten per cent in 2006 to more than 14 per cent in 2015.

A report by the Swedish Education Agency released on Monday concluded that 85 per cent of the increase was explained by immigrant students unable to catch up with Swedes of the same age.

Over the past decade, Swedish test scores on the OECD’s so-called PISA ranking of school performance among 15-year-olds has seen the most dramatic drop out of all the countries taking part in the survey.

At the same time, the percentage of students in Swedish schools who had arrived in the country after the age of seven jumped from three per cent in 2006 to eight per cent in 2015.

The report, entitled The Importance of Immigration for School Results, defines ‘immigrant students’ as children who are either foreign-born or whose parents are both born outside Sweden.

It concluded that as immigrant students now arrive in greater numbers and at an older age, they had less time to learn Swedish and catch up in vital subjects before leaving Year 9.

As a result, an increasing number of foreign-born students fail to obtain the grades needed to move on to Swedish upper secondary school – equivalent to A-levels or High School.

‘We already know that immigrant students on average have lower performance in school,’ said Education Agency Director Anna Ekstrom.

Now we know more about how much the increasing proportion of immigrant students has affected overall performance.’