This is the 15910th most frequent Russian word.
просветительского
"Просветительского" means "enlightenment" or "educational" relating to spreading knowledge or awareness.
Here, 'просветительского' is used to describe the nature of the program, linking it to educational or enlightening goals.
Программа просветительского характера была внедрена в школах.
The program of an educational nature was implemented in schools.
In this sentence, 'просветительской' (a variant of 'просветительского' due to grammatical case) specifies the purpose, emphasizing the intention to educate or enlighten.
Он организовал общественные мероприятия с просветительской целью.
He organized public events with an educational purpose.
Here, 'просветительских' is used attributively to describe movements, indicating their focus on spreading knowledge or enlightenment.