For admission into the science honours course, you must have:

completed the requirement for the Bachelor of Science at Monash University or an equivalent degree, and
obtained a distinction grade average (70 per cent) or above in 24 points of studies in relevant units at level three, and
met the normal Monash University English language requirements for undergraduate students.
The level three units upon which admission to the Honours program is based must have been completed no more than five years prior to commencement of the course.

IELTS (International English Language Testing System – academic test) - Overall score : 6.5 (Listening score: 6.0, Reading score: 6.0, Writing score: 6.0, Speaking score: 6.0)
TOEFL- PBT- 550 or above with (Test of Written English Score: 4.5 or above)
TOEFL IBT - 79 (Listening score: 12, Reading score: 13, Writing score: 21, Speaking score: 18)