The school I work in has three fantastic MFL teachers. The children do French and Spanish at KS3. We usually manage to get one option group of between 20-30 students at KS4 from year groups of 160.
One or two children will ask to do two languages at GCSE but we can not afford to timetable those classes. It costs about 1300 for a lesson to be timtabled for a year. They get 3 a week for an option subject so that is about £4000 for an MFL option group per year. We get £4500 per students to cover 30 lessons in their timetable and everything else a school does- cleaning, admin, Guidance and support, trips, equipment etc.
You can see why a couple of students opting means the lesson can't run.
It is impossible at A level. Between us, the other two local schools, and a sixth form college and a private school working together, we managed a group of 5 to study French in Y12 last year. Not financially viable but we went ahead. 2 dropped out during the year and we are now runnng it in the second year for 3 students.
MFL is just not popular with children in most secondary schools. It will be even less so when he new GCSE comes in which is extremely hard and dull.
Our 5 feeder primary schools do not have a specialist MFL teacher and the children come up with a poor experience. WE have offered them one of our staff part-time but they can not afford it.
Just wait until the government announce every child has to do it until aged 16. It is an awful decision and I thnk Secondary Head's will rebel and refuse to make children do it. It is not appropriate for every child.
I await flaming from middle class leafy suburb MFL teachers.