What underlying data do you want to make available? There's no consistent data collection across the schools, what there is exists for internal use at a school

What underlying data do you want to make available? There's no consistent data collection across the schools, what there is exists for internal use at a school so there's no requirement for it to be to any particular standard or of any particular frequency throughout the course. It's also a single grade per subject, so the university /employer will usually have 3-5 grades to work with, as well as the broader picture built up from the personal statement/cover letter and interview.