When to capitalize:
* As a proper noun: When referring to a specific program, department, or organization. For example: "The Speech and Language Therapy department at the hospital."
* At the beginning of a sentence: This is a general rule of grammar. For example: "Speech and language therapy can help with communication difficulties."
When not to capitalize:
* As a general term: When referring to the field of study or the practice in general. For example: "She is studying speech and language therapy."
* In a list: When it's one of several items in a list. For example: "The services offered include speech and language therapy, physical therapy, and occupational therapy."
In summary: Capitalize "speech and language therapy" only when it functions as a proper noun or at the beginning of a sentence. Otherwise, use lowercase.