John is the best output of Kaaa school.

Does it look natural? Do you use "the best output of ~" form?
John is very famous across the world. He graduated from Kaaa school. What I want to say is "John is the greatest person among Kaaa school graduates."

Thanks in advance!

Question

John is the best output of Kaaa school.

Does it look natural? Do you use "the best output of ~" form?
 John is very famous across the world. He graduated from Kaaa school. What I want to say is "John is the greatest person among Kaaa school graduates."

Thanks in advance!

Answer

The phrase "John is the best output of Kaaa school" sounds somewhat awkward in English. "Output" is generally not used to describe people in this context. Instead, you could say:

"John is the most outstanding graduate of Kaaa school."
"John is Kaaa school’s most famous alumnus."
"John is the best-known graduate from Kaaa school."
"John is Kaaa school’s greatest success."
Each of these alternatives conveys that John is a highly distinguished or celebrated person among the graduates of Kaaa school and would sound more natural to English speakers.

Answer

I would  rather write it this way.
"John is the most outstanding student in Kaaa!"

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