I did mine in 2017/8. Yes a bit dodgy (one invoice and minimal contact re invoice details!).
However it was all online. The first tutor I had was okay (but left), the second was terrible (I made a complaint), and the third excellent.
I'm glad I did it, but... I've worked in three schools, 1 SEN, 2 primary, and can say that what the course said was relevant... really wasn't - or at least only marginally. Colleagues in secondary say much the same.
It was all about managing projects, HR reconciliation, and quite high level stuff which, in reality (at least for me) sat with the Trust/Governors rather than me. The budget was good but would really well have been served by a good accounting course. The project management was mainly common sense.
It doesn't cover Census, absence management and all the day to day stuff that is actually part of the role. How to work out what your Pupil premium allocation/Sports Premium is, what it should be and what you can cover with it.
It's nice to have, but actually not fantastic in the real world.