As with many online education offerings, the amount of time that it takes different individuals can vary greatly from person to person.

For teachers in NSW accredited at Proficient with the NSW Education Standards Authority (NESA), you are able to add any additional time as 'Teacher Identified' professional development (TIPD) if you have taken more than half an hour longer to complete the course. 

This additional time can fall outside and in addition to the amount of of time listed on the course/certificate.