Celebrated day with school over (5)
I believe the answer is:
noted
'celebrated' is the definition.
(synonyms)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for noted that I've seen before include "Toned down and recorded" , "Famed" , "Recorded in writing" , "Scored" , "Scores like this" .)