Consumer associations play an important role in product evaluation by carrying out tests on behalf of consumers to determine if products meet quality standards. They compare similar products in a market and recommend those that offer the best value. The media also contributes by featuring consumer and lifestyle programs that report on new products. Education contributes through curriculum that teaches design principles so consumers can better evaluate products. Consumer associations set guidelines for products and handle complaints to provide recourse if standards are not met. They publish results so consumers have data to inform their purchasing decisions.