Final answer:
Colleges often require transfer students to have at least 24 or more college-level credits to potentially waive the need for high school transcripts and SAT/ACT test scores, as the student's college performance is a better measure of their current academic abilities.
Step-by-step explanation:
The number of credits a transfer student must have to likely not need to send in high school transcripts and SAT/ACT test scores can vary by institution. However, many colleges and universities often require transfer students to have completed a certain number of college credits to be considered for admission without high school documentation. Generally, if a transfer student has completed at least 24 credits, and especially if they have 30 or more college-level credits, it is more common for colleges to waive the requirement for high school transcripts and standardized test scores. This is because the student's college performance is deemed a more relevant indicator of their academic abilities. It should be noted that every college has its own policies and may have different requirements for transfer applicants.