The requirements for certification in a class action include

a. proof that the class action will be substantially less convenient than individual proceedings

b. proof that all of the claimants are being represented by the same law firm

c. a clearly defined class and most substantive issues are common to every claimant in that class

d. a payment of bond money to the court, to be used to pay for the defendant's costs if the claim is unsuccessful

e. proof that every potential member of the class has been personally notified of the proceedings.