Which factor does NOT affect the education of nurses?

The availability of male nurses is not a factor that affects the education of nurses in the same way that the other options do. Factors like concern for upgrading the profession, shortages of nurses, and legislatures' involvement directly impact educational policies, funding, and curriculum development, which shape how nurses are trained and educated.

The concern for upgrading the profession can lead to the enhancement of educational standards and the introduction of new training programs, ensuring that nurses are equipped with the latest knowledge and skills. Shortages of nurses necessitate adaptations in nursing education to produce graduates more efficiently, possibly altering curricula to expedite the training process. The involvement of legislatures can significantly influence nursing education by enacting regulations that establish accreditation standards, funding for education programs, and licensure requirements.

In contrast, while the presence of male nurses is an important aspect of gender representation within the field, it does not have a direct role in shaping the education and training processes of nursing programs. Thus, it stands apart from the other critical factors affecting nursing education.