Candidates in South Africa achieved a 91% pass rate in the recent HAREC compatible radio amateur exam
In the UK, the HAREC compatible exam is the Advanced. In 2013 the Advanced pass rate was 70.2% significantly lower than that achieved for the South African exam.
The highest pass percentage was 98% and this person obtained 100% for the regulations.
The next HAREC Exam is scheduled for May 2015.
UK exam statistics - http://www.commsfoundation.org/rce/pdf/Examination_Committee_Report_2013.pdf