the teachers credit card offers special features like multiple reward points weekend bonanza points petrol surcharge waiver and 500 teachers day special gift reward points credited annually on teachers day the bank said in a statement with a combined market size of more than 450 million students and growth rates of 1015 expected over the next decade education is one of the largest service sectors in india the industry is also largely fragmented with over 95 held in the unorganised sector research indicates a huge demand supply mismatch only corrected with an approx investment of usd 100bn by 2014 hdfc bank said in fact a csfb report kpmg analysis points out with the total market of education institutions expected to increase to rs 2500 billion by the end of 2012 the education sector will have attractive margins apart from the teachers credit card launched by hdfc bank the private sector bank had launched doctors credit card hdfc bank is the largest issuer of credit cards in the country with a customer base of 560 million as of march 31 2012 the bank said