This is the 3115th most frequent Polish word.
prowadzonego
"Conducted" or "led" (depending on context).
Here, 'prowadzonego' is used as a past participle to describe the course being 'led' or 'conducted' by someone.
Kurs języka polskiego był prowadzony przez doświadczonego nauczyciela.
The Polish language course was conducted by an experienced teacher.
In this sentence, 'prowadzonego' (here modified to 'prowadzony' for case agreement) describes the project as 'led' by students.
Projekt prowadzony przez uczniów zdobył nagrodę.
The project led by students won an award.
This use transitions to describe a person (the 'host' or 'leader', participle used as noun) related to an activity or management context.