Yes, "school-wide" is hyphenated when used as an adjective to describe something that pertains to the entire school, such as "school-wide event" or "school-wide policy." The hyphen helps clarify that the two words function together as a single descriptor. However, when used as a noun or in other contexts, it may not require hyphenation.
I think it's more accepted to hyphenate it.
It is not hyphenated.
No it's not hyphenated.
Motorcycle is not hyphenated
words are only hyphenated when they have a separate meaning when separated than they do when hyphenated
Yes it should be hyphenated.
No, "hardworking" is not hyphenated.
It can be. Some words can be seen both hyphenated and non-hyphenated.
No. Well above is not hyphenated.
Yes it should be hyphenated.
The word desperate hyphenated
peace of mind is not hyphenated.