Difference Between Selection And Censorship

The question is how will a school librarian differentiate between selection and censorship? Working in an elementary school I see that a school librarian may find this really hard due to ensuring that the collection is part of the school mission and goals of the school and district. Asheim states, “The major characteristic which makes for the all-important difference seems to me to be this: that the selector’s approach is positive, while that of the censor is negative” (p. ).
Keeping this in mind when school librarians look at selecting and building their collections one should evaluate the collection for the benefits it could have on the current collection and not finding only the negatives that the source has.
I can see how a school librarian