Here's why:
* As a profession: Just like other professions (e.g., Nursing, Engineering), Speech-Language Pathology is a specific field with its own established identity and professional organization.
* As a field of study: When referring to the academic discipline, it's often capitalized.
Examples:
* "She is studying Speech-Language Pathology at the university."
* "The American Speech-Language-Hearing Association (ASHA) sets the standards for the profession."
* "He is a licensed Speech-Language Pathologist."
However, it's generally not capitalized when used as a general term:
* "He has difficulty with speech-language pathology."
Ultimately, the best way to determine if you should capitalize it is to consider the context and the intended meaning.