To apply for the sc186 visa under the TRT( Temporary Residence Transition) stream, the applicant needs to have an English language skills of at least Competent English.
Earlier, the required English language score were exempted if the applicant has completed the five years of full-time study in English towards a degree.
From 16th November, this exemption has been amended and thus the only exemption is if you hold a passport from the certain eligible country.
The changes are implemented only for the sc186 visa under the TRT stream and the exemption still exists for sc186 visa under the DE (Direct Entry stream).