In May 2009, he was selected by president Bingu wa Mutharika to become a cabinet Minister, expected to get the Education portfolio.
He became a member of the Viceroy's Council in 1915 with the charge of the Education portfolio.
On August 26, 1918, he would be appointed to the Minister of Education portfolio.
He relinquished the Education portfolio on 26 March 1935, when he was reappointed deputy leader.
In his last year Mr. Lang had taken on the Education portfolio in addition to Culture and Communication.
Later, he was also given the Education portfolio.
He was appointed Shadow Minister of Higher Education, and later moved to the Basic Education portfolio.
He became opposition critic for the high-profile Education portfolio.
Brogden then appointed him on 8 April 2003 as Shadow Minister for Health, dropping his Education portfolio.
Miller was a conservative figure in the Education portfolio, and regularly opposed calls for expanded school board areas.