What is the pass mark for burnham grammar?

There's no single "pass mark" for Burnham Grammar School. The minimum required score to gain admission varies significantly from year to year depending on the number of applicants and their overall performance. It's based on a combination of factors, usually including:

* Entrance Exam Results: The school uses a selective entrance exam, and the cutoff will depend on the performance of all the students who take the exam that year.

* Academic Record: Their previous school reports and grades will be considered.

To find out the approximate scores needed for a particular year, you would need to contact Burnham Grammar School directly. They may not release the exact cut-off score publicly, but they may provide a range or give you an idea of the typical performance level required.