Last year President Robert Mugabe, who has been described as a perfectionist and a disciplinarian, expressed his disappointment after his oldest son Robert failed his Advanced Level exams.

"'How are you doing?', we would ask him, 'The papers were not hard,' he would say. We expected he would get through, but no, he became an undertaker! 'U's! That is why they call them undertakers! The whole group were all undertakers; about six of them," the president revealed at the time.

Now according to recent press reports his youngest son, Chatunga Bellarmine, was expelled from the Catholic run St. George's College in Harare for "indiscipline and insubordination".

It is not clear what the 16 year old did, but according to the Daily News the president's son is now receiving "home schooling" . The news paper reports he was on a last warning after having been suspended for a week from school last year for bad behavior.

Political commentator Clifford Mashiri said this is an eye-opener as it reveals what goes on in Zimbabwe's first family.

"It shows that not all is well and neither are they all as intelligent as their father appears to be, with a chain of degrees and shortchanging Zimbabweans here and there and outwitting his political opponents."

Some observers say it must be a difficult life for the children, who are brought up around people who constantly praise their father, sometimes saying he is God.

The president has three children with his wife Grace. His eldest Bona graduated with a degree in accounting from City University in Hong Kong in 2011.