This is the 15768th most frequent Russian word.
проведённых
"Conducted" or "carried out."
acts as an adjective describing "events" and indicates that these events have been conducted or carried out.
Я доволен результатами проведённых мероприятий.
I am satisfied with the results of the conducted events.
used as an attribute to specify "lessons" that have been carried out.
Количество проведённых уроков в этом месяце увеличилось.
The number of conducted lessons this month has increased.
modifies "tests," indicating they were executed or performed in the context.