Personalized learning promises a strategy to specifically adjust education to the unique needs and skills of individual children, he argued, but really it means merely "adjusting the difficulty level of prefabricated skills-based exercises based on students' test scores... [and] requires the purchase of software from one of those companies that can afford full-page ads in Education Week". While "certain forms of technology can be used to support progressive education", Kohn wrote, "...meaningful (and truly personal) learning never requires technology. Therefore, if an idea like personalization is presented from the start as entailing software or a screen, we ought to be extremely skeptical about who really benefits."[17]