in a class by (itself)

the best or only one of its kind.

The High Desert Museum was in a class by itself.

Usage notes: also used in the form in a class by yourself:

Among jazz singers, she was in a class by herself.

• put someone back on track
• put someone in a hole
• put someone in mind of
• put someone in mind of someone
• put someone in mind of something
• put someone in place
• put someone in their place
• put someone in the picture
• put someone in the shade
• put someone off stride
• put someone off their stride
• put someone off the scent
• put someone on a collision course
• put someone on a pedestal
• put someone on edge
• put someone on the map
• put someone on the right track
• put someone on the shelf
• put someone on the spot
• put someone out of action
• put someone out of its misery
• put someone out of mind
• put someone out of misery
• put someone out of their misery
• put someone out of your mind