Which one of the following careers requires ONLY a bachelor's degree?

The career that requires ONLY a bachelor's degree is a Teacher Assistant. Individuals in this role provide support to teachers and help facilitate the learning environment in classrooms, often working with students one-on-one or in small groups. Typically, the requirements for this position include a high school diploma and, in some cases, a bachelor's degree, but it does not necessitate advanced degrees or certifications that are essential for professions like school psychologists, school counselors, or clinical psychologists.

In contrast, becoming a school psychologist or a school counselor generally requires a master's degree or specialist degree in psychology or counseling, along with necessary certifications. Similarly, a clinical psychologist must complete a doctoral program in psychology, which includes extensive training and supervised experience. Thus, the Teacher Assistant role stands out as the only position that can be pursued with just a bachelor's degree.