* Part of a larger degree: 300 hours could represent a significant portion of a larger degree program, perhaps a third or half, depending on the total program hours.
* A certificate or diploma: A shorter, more focused program might award a certificate or diploma after completing 300 hours of coursework. These are not full degrees.
* Continuing education units (CEUs): Some professional development programs use CEUs, and 300 hours might translate to a significant number of CEUs, but this isn't an academic degree.
To know what kind of credential 300 hours of coursework might lead to, you'd need to know the specific program offering those hours. Look at the program's description; it should clearly state the credential awarded upon completion.