He did M.A. in Economics from the Delhi School of Economics. Earlier Rajkhowa finished his schooling from Jorhat Government High School, Intermediate in Arts from J.B. College, Jorhat, and B.A. (Hons.) in Economics from Cotton College, Guwahati.
While on deputation to the National Thermal Power Corporation Ltd (NTPC), New Delhi, a Government of India Public Sector Enterprise, he guided and supervised the publication of the "Do's & Don't's" and was also the Chairman of the Editorial Board of the journal titled "Sachetak". Mr Rajkhowa also authored a book, Central Vigilance Mechanism with special reference to P.S.E's, besides contributing a number of articles to leading newspapers.
The major work of Mr Rajkhowa, which earned him accolade from historians, scholars, intellectuals, military experts and the general readers, is Generalissimo Chilarai and his times, a historical biography on the legendary Koch king Chilarai.
Rajkhowa's other influential work was his second historical biography called Sankardeva: His life preachings & practices. The book's topic was Srimanta Sankardeva, a cultural and religious figure of Assamese history.
