def get_results_for_class(self, dclass=None):
        # Create table with results
        result = ResultsTable(self.get_total_rounds(), self.get_grop_rounds(), self.get_rounds_list())

        # Determine the directory
        dirname = self.get_directory()

        # Determine the file
        fname = dirname + "/CLASS"
        if dclass:
            fname += "-" + dclass
        fname += ".json"

        # Read it
        if os.path.isfile(fname):
            result.set_table(json.load(open(fname)))

        return result