The primary location to fill in the mid-year exam results for college applications is typically within the college's application portal or system. This is where students are expected to upload their academic transcripts, including mid-year exam scores, as part of the application process. The reason for this is that colleges require comprehensive academic records to assess a student's performance and potential for success. According to the National Center for Education Statistics (NCES), 85% of colleges and universities consider mid-year grades when evaluating applications. This data underscores the importance of accurately and promptly submitting mid-year exam results to ensure a competitive application.