He did his pre-university course from V.O.Chidambram College Tuticorin, graduated from St.Xaviers college, Palayamkottai, had his post-graduation from Gandhigram University, Dindugul, and Bachelor of Law from Law College, Chennai.
During(after his degree, post graduation and law college studies) the holidays Arunachalam did not want to sit idle so he worked in offices like National Small Savings Corporation and All India Radio, Trichy.