It is problematic In the UK and Beyond.
There is this mentality that if you want to, as a single entity or organisation, want to do something good for this educational system, you will be met with so much unnecessary pushback you will think you are dealing in a corporate system.
Effectively englands schooling system is that of an establishment pipeline (school to work) in that the slightest bit of innovation is seen as a capitalist threat. Still, we push through
Some tips i have for getting into school system are:
workshops you hold should firstly serve a purpose that is beneficial to the students, parents and teachers in the schools. Emailing is not the best idea to get their attention but speaking in assemblies and teacher meetings is one of the best ways. You should write a proposal and mail it to the suggested school/schools beforehand.
-The difficulty with selling workshops to schools and colleges is that their faculty are unionized and the union is solely responsible for curriculum development. This is a hard sell. The only way to reach these people is to make a presentation where you essentially teach the workshop to faculty who will be teaching it to students if they decide to buy.