The Company has two classes of outstanding common stock: Class A Common Stock and Class B Convertible Common Stock. Earnings per common share – basic excludes the effect of common stock equivalents and is computed using the two-class computation method. Earnings per common share – diluted for Class A Common Stock reflects the potential dilution that could result if securities or other contracts to issue common stock were exercised or converted into common stock. Earnings per common share – diluted for Class A Common Stock has been computed using the more dilutive of the if-converted or two-class computation method. Using the if-converted method, earnings per common share – diluted for Class A Common Stock assumes the exercise of stock options using the treasury stock method and the conversion of Class B Convertible Common Stock. Using the two-class computation method, earnings per common share – diluted for Class A Common Stock assumes the exercise of stock options using the treasury stock method and no conversion of Class B Convertible Common Stock. For the nine months and three months ended November 30, 2011, and November 30, 2010, earnings per common share – diluted for Class A Common Stock has been calculated using the if-converted method. For the nine months and three months ended November 30, 2011, and November 30, 2010, earnings per common share – diluted for Class B Convertible Common Stock is presented without assuming conversion into Class A Common Stock and is computed using the two-class computation method.

The computation of basic and diluted earnings per common share is as follows:

For the nine months ended November 30, 2011, and November 30, 2010, stock-based awards, primarily stock options, which could result in the issuance of 9.2 million and 22.7 million shares, respectively, of Class A Common Stock were outstanding, but were not included in the computation of earnings per common share – diluted for Class A Common Stock because the effect of including such awards would have been antidilutive. For the three months ended November 30, 2011, and November 30, 2010, stock-based awards, primarily stock options, which could result in the issuance of 9.6 million and 16.3 million shares, respectively, of Class A Common Stock were outstanding, but were not included in the computation of earnings per common share – diluted for Class A Common Stock because the effect of including such awards would have been antidilutive.