The use of the words 'pass' and 'fail'

[Tom]

Hi

I would like to understand the use of the following words as adjectives.

[Mister Micawber]

.
I passed the test.
I failed the test.

The teacher gave a party for the students who passed only.
Please tell me the number of students in this class who passed and failed.

While 'failed' is indeed used as an attributive adjective, I find 'passed' odd in that position.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[Yankee]

.
You could use the present participle as an adjective this way, Tom:

The teacher gave a party for only the students with passing grades.
.
_________________
Amy
.
ESL teacher, and native speaker of American English