Each cadet is different in terms of how academically prepared they are for the rigors of plebe year. You are tested during Beast and some cadets are offered the option to validate courses, most are assigned to the regular classes, some are placed in "advanced level" plebe courses, while others are put into remedial or "rock" level classes. This is one of the areas that you should not be worrying about today. Each cadet has different strengths and weaknesses and things will work out. There will be areas where you are ahead of most of your classmates and other areas where you will need to seek out help. This is an area where each cadet's situation is different and you should do what works best for you by balancing the anticipated course load over four years and the impact to your GPA. My own opinion on validation and AP scores is the same regardless of the college. For 99.9% of freshman, classes that build on each other and your major should be repeated in college while validating classes that do not support your major are a good idea. A chemistry major testing out of economics or history is probably ok while a physics major should take first year math classes.
Just for an example, my DD who had completed a year of college:
* Validated plebe history after a 5 AP score and an A in college level world history - is a life science major who does not need any history.
* Taking advanced chemistry after taking a year of chemistry in college - Life Science major that needs the chemistry foundation. BTW, advanced classes are usually more work, but are not as difficult as the name implies.
* Did not sit for the calculus validation exam during beast even with a 4 AP score. Calculus is her weakest subject and she did not want it to impact her other classes
* Was placed in regular english even though she has a 5 AP score and A's in two semester of college english - requested to validate but was not selected
* Validating history lets her get two classes ahead in her major sequence.