Is k for thousand capitalized

In general, the abbreviation “k” for “thousand” is not capitalized unless it is used at the beginning of a sentence or in a title where all words are capitalized.

For example:

• The company’s revenue increased by $100k last year.
• K-12 education refers to primary and secondary education in the United States.

However, it’s important to note that different style guides may have their own rules and preferences regarding the capitalization of abbreviations, so it’s always a good idea to check the specific style guide being used.