I think the most important thing to note is that Mikkayla made herself unemployable as a secondary teacher for the next five years or so. As to what you're saying about teacher training, you are making generalisations. did you know that the mark to get into PDHPE is higher than for any maths or science education degrees? And given the complexity of the HSC PDHPE course for the HSC, if you score in the top band in the course you are awarded the same number of points towards your ATAR as the top band in Physics. As for training English teachers, some unis are incredibly demanding (as they should be) and others are not. But because as you rightly point out, there is a dearth of science and maths teachers, it's those courses that often take students with lower grades. And don't even start me on the marks for primary teaching.