Sentence examples for important at from inspiring English sources

"important at" is not a correct and usable form in written English.
It is not a grammatically correct phrase and does not convey a clear meaning. It is possible that you may have meant to say "important to" or "important for" which are commonly used phrases in English. Example: It is important for students to develop good study habits. This sentence could also be rewritten as: It is important that students study effectively.