In Kumashiro’s text called “Against Common Sense”, he defines common sense as the hidden knowledge or ideas that society believes. Specifically, he says that people have hidden knowledge about teachers, education and how teachers should be teaching. Certain people believe that schools should have teachers that teach in certain ways, such as teaching directly from the textbook and only assigning midterms and finals as tools to grade students. These are examples that are considered to be seen as common sense. But Kumashiro says that common sense limits what is considered to be consistent with the purposes of schooling and therefore, it is important to pay attention to common sense.
The problem with common sense is that when people are used to teachers teaching in a certain way or schools to be run a certain way, people seem to be very stubborn or against change in teaching or change in the way that the education system runs. It is never usually questioned why schools are open from September through June, or why why students are grouped by age, but common sense tells us that experiencing such things is what it means to be in school and therefore, we never question these ideas that seem to be common sense. Common sense also makes it easy to continue teaching and learning in ways that allow the oppressions already in play to continue to play out unchallenged in our schools and society. Therefore, common sense is not what should shape educational reform or curriculum design, but it is what needs to be challenged.