The entry on Google Maps is a "place" not a geocoded result.
Charles La Trobe P-12 College
235 Kingsbury Dr, Macleod Victoria 3085, Australia
+61 3 9223 1400 · vic.edu.au
The Places API finds the correct location (as the first result). The geocoder returns a result for Victoria, Australia (-37.4713077, 144.7851531), which is the best "address" it can find in the string you gave it.