To be honest, As a school captain your duties involve just being nice, and standing at the assemblies, wear some special uniform addressed to a school captain, and if a student asks what have you done so far, just tell them legit lies.
Such examples includes:
"I have assembled a dedicated cleaning program that has been performed after school by cleaners, This keeps the school clean but it is also you student's responsibility to keep the school clean"
"I have wrote a letter to principle recently about getting toilets cleaned and how toilets remained not-flushed"
"I just implemented a request as an captain to form a new program for our students that they can come to library after school for homework as most of the students remained distracted at home, this program would also include teachers to be there as students may need help. But to be honest i am not sure whether it will be accepted or not as teachers wont be paid for after school lessons"
Bottom Line: Umm do nothing and just say your doing something, being a school captain helps you alot in your resume.
perhaps you can try doing this, print 50 or 40 papers and visit every class in your free-periods and take a survey of students on some suggestion from students and teachers. Perhaps try after-school homework program. This will let the people know your doing something and no one will say "that guy did no shit as a captain"
But to be honest again, school captains does no shit, my friend is a school captain so i know this stuff... When I asked them what they do, all he said was "i am not sure either, I just got selected and represented as school captain in the assembly and nothing has been done so far, like no teachers or staff told me anything and stuff"
#Sorry4BadEnglish