Yes. Perhaps a dialect difference. We'd say "pass rate" to mean "get less than this and you fail, more and you pass". We don't tend to use the word "grade" here

Yes. Perhaps a dialect difference. We'd say "pass rate" to mean "get less than this and you fail, more and you pass". We don't tend to use the word "grade" here for results in tests, to my ears it sounds very Amercian. ☺ We'd say "mark".