You won't be teaching GCSE maths with a PGCE in biology...... It's common to teach all 3 sciences with a science PGCE but you aren't expected to teach any non science subjects maths included.
I have many teacher friends who are not teaching their degree subject. I have a maths teacher friend with a biology degree, a geography teacher friend with a chemistry degree, etc. You’d be surprised.
That makes no sense whatsoever........ You're not able to do a PGCE in a subject different to your degree or if the degree has less than 50% content of the subject you wish to teach...... You're making no sense whatsoever. please refer to PGCE entry requirements before believing people who are giving out misinformation
They have a PGCE in their degree subject. Often times schools are desperate for teachers in certain subjects and will have other teachers fill in, and then they end up fully teaching that role. It happens. It doesn’t mean it will, and people should teach their degree subject. Just to be aware that sometimes it does. Heck, even my best friend is a French teacher with a psychology degree!