Posting Copyrighted Material

from

 "Fair use" clause
includes rights for posting examples of a body of work"The law gives several means for making lawful uses of copyrighted works in connection with research, teaching, and service at the university."
i.e.
First Sale (Section 109(a)).This important exception limits the "distribution rights" of the copyright holder by providing that once the owner authorizes the release of lawfully made copies of a work, those copies may in turn be passed along to others by sale, rental, loan, gift, or other transfer. This important exception allows libraries to lend materials and stores to sell books.
Displays and Performances in Face-to-Face Teaching (Section 110(1)).Under this exception, educators may make performances and displays of all types of works in a classroom or similar place at most educational institutions. It allows instructors and students to recite poetry, read plays, show videos, play music, project slides, and engage in many other performances and displays of protected works in the classroom setting. This statute is actually comparatively simple and broad, but keep in mind that it permits only displays and performances in the classroom—not the making of copies or the posting of digital works on servers.Computer Software (Section 117).This exception allows the owner of a copy of a computer program to modify the program to work on his or her computer or computer platform, and to make a back-up copy of the software to use in the event of damage to or destruction of the original copy. Realistically, most commercial programs are sold for use on multiple platforms, or the rights of use may be governed by license agreements.Architectural Works (Section 120).Architectural designs are protected by copyright, but this exception makes clear that once a building is constructed at a place visible to the public, anyone may make and use a picture of that building without infringing the copyright in the architectural design. We might infringe copyright when we reproduce blueprints or duplicate the Trump Tower, but we are not infringing when we snap a photograph and use it in a book or even on postcards.Special Formats for Persons Who Are Blind or Have Other Disabilities (Section 121).This exception permits certain organizations to make specific types of formats of published, non-dramatic literary works in order that they may be useful to persons who are blind or have other disabilities. For example, some educational institutions and libraries may be able to make large-print or Braille versions of some works in the collection.
Public Displays (Section 109(c)).

One of the rights of copyright owners is the right to make "public displays," but this statute allows the owner of a lawfully made copy of a work to display it to the public at the place where the work is located. The art museum that owns a painting may hang it on the wall; a bookstore can place books on display in front windows; and the library may put materials in the display cases for all to see.

emphasis mine.