Don, IELTS is not a part of graduating from the degree, IELTS is the requirement to practice in the field post graduate.
Students can ‘easily’ pass the English components of reading/writing for the exam, of the conversationalist English required to get by in society, but professional registration requires a formal IELTS score.
My wife’s sister and husband sold up their entire lives in Poland and emigrated to Australia. She had already formally studied English in Poland for 20 years, even doing her Polish degree in psychology in English rather than Polish. She came to Australia and a bridging course in Australian conversational English, basically learning our slang, idioms and other non formal use before completing her masters in psychology in Adelaide.
AFTER that, she was still only TR, and to enable her to register/practice as a psychologist she needed an IELTS exceeding 6.0 in each examined discipline. That took her more than three goes, and in addition to her tutor, I would also inspect her practice papers and could seldom pick an issue - still no pass. She would easily make the grade as say a tradie, or a regular emigrant looking for an ‘unskilled’ position, but not for a professional role.
She was actually starting to wind up her affairs in Australia to move back to Poland when eventually she managed to gain the required score.
She was professionally registered, listed with AHPRA but still not eligible for PR until she had a permanent role in her field. Finally she was offered a position on near zero money which she took to gain PR. Almost instantly after that she was being accepted for psychologist positions that paid proper money.
Now she and her hubby are both citizen, but don’t kid yourself that it was easy, or cost as little as $30k they likely spent over $100k.
Just today I met a pair of American microbiologists, they became citizen on Australia Day just gone. They estimated that they spent USD320k coming here.
They paid USD60k for their skilled migrant visas, but then our government during the processing took their roles off the desired skills list and their visas were rejected because of that. They appealed but were told by the government to prepare to leave Australia because they were in danger of becoming unlawful in the country.
The best option was to apply for a different visa, which cost them USD40k which is what they were finally granted. During that processing time they actually won their initial appeal review and were sort of granted both visas, but even then it took half a year for our immigration to decide which of the technically two granted visas actually applied...
If you’ve not been through it (and my wife is still going through it) you have no idea what it’s like.