Annette H. Ihle's 2007 study of Muslim School (also called Free Schools) have a higher rate of students continuing into high school than national public schools (41% to 26%).[1] A more recent 2016 analysis by the politically independent think-tank Kraka concluded that students with a non-western background attending Muslim private schools achieved significantly better grades in their 9th grade exit examinations than their counterparts at Danish public schools. The difference between the students' final examination marks was 1.4 grade points–an average 4.6 at the public schools and 6.0 at the Muslim private schools.[46]