Which issue is NOT a concern regarding cruel and unusual punishment for inmates?

Access to education is not typically categorized under concerns regarding cruel and unusual punishment. The Eighth Amendment of the U.S. Constitution specifically addresses punishments that are deemed inhumane or excessively harsh, primarily focusing on issues such as physical safety, sanitation conditions, and medical care, which directly impact an inmate's basic human rights and dignity while incarcerated.

While education is an important aspect of rehabilitation, it does not fall under the same juridical scrutiny as the conditions impacting an inmate’s immediate safety and health. Issues like personal safety involve physical harm from violence or threats, sanitation relates to the cleanliness of the living environment which affects health and wellbeing, and medical care addresses the necessity for adequate health services, all of which are closely tied to the prevention of cruel and unusual punishment. Therefore, the access to education, although important for rehabilitation, does not present a direct concern regarding cruel and unusual punishment in the same urgent manner as the other aspects listed.