| Principal | Sister Barbara Bochat | principal@msj.nsw.edu.au |
| AP (Administration) | Mr Alistair Symons | apadmin@msj.nsw.edu.au |
| AP (Curriculum) | Mr Jeff Ray | curriculum@msj.nsw.edu.au |
| AP (Mission) | Mrs Terrie Yule | religion@msj.nsw.edu.au |
| AP (Students) | Mrs Lee Barham | ap@msj.nsw.edu.au |
| Business Manager | Mr John McConachie | bursar@msj.nsw.edu.au |
| IT | Mr Danny Basseal | infotech@msj.nsw.edu.au |
| Sports | Ms Alana Craft | sport@msj.nsw.edu.au |
| Teacher Librarian | Mrs Marilyn Burnett | librarian@msj.nsw.edu.au |
| Fees Office | Mrs Connie O'Connor | fees@msj.nsw.edu.au |
| Enrolment Secretary | Ms Louise Bourke | enrolments@msj.nsw.edu.au |
| Student Services | Mrs Gail DeSantis | absentee@msj.nsw.edu.au |