What does "Highest Recommendation" Mean?

I was in an interview and my interviewer said that he would give me the highest recommendation. What does this mean? Is this a good sign?

Interviews will almost never tip the scales. Be happy, but read nothing into it.

It means that the interviewer’s opinion was very good and that they were going to give you their best recommendation. Congratulations on giving an excellent interview. Now keeping it all in perspective, you can look up the Common Data Set for that school under section C7 and see how an interview is considered in the decision process. Best of luck to you!