Should Highest Ranking Be Hyphenated?

When using high or low (or other adjectives) as part of a compound adjective before a noun, a hyphen should be inserted between high or low and the word that it modifies. Some examples of compound adjectives using high and low are high-level/low-level, high-income/low-income, and high-impact/low-impact.

Is Highest Rated hyphenated?

Use a hyphen with comparative and compound adjectives (words ending in er and est). Examples: longer-term study, best-qualified candidate, highest-rated schools. Use a hyphen in a temporary compound adjective (one that is made up of specially chosen words to best describe something).

Should top level be hyphenated?

It is hyphenated because it is an adjective.