The following information will assist you in applying for jobs with Fairfax County. You may also download this helpful brochure to assist you.Do not simply cut and paste information from your resume. Always send a cover letter with your resume unless the job listing specifically says not to do so. This guide describes how to apply for jobs using the Career Page web site. The process consists of the following steps: A cover letter usually is three paragraphs long and outlines why you are applying for a specific position, a brief overview of your professional background. When completing an online application for the FCPS principal pool, candidates will be instructed to upload a resume. A cover letter is not required. I would be happy to provide you with a (free) sample of my work based on an assigned brief.