I will try to be as succinct as possible in responding. Please feel free to add follow-up questions.
If you have an effective system in place in high school that facilitated the balance between school and fencing, this is generally transferable, recognizing that a college curriculum will pose unique challenges.
To this end, I suggest sending an email from the student to each professor (each semester), introducing him/herself and explaining a bit about the challenges and upcoming travel and missed classes due to fencing. Suggest getting work ahead of time to stay ahead. Also offer advance notice on absences to facilitate alternative testing dates when necessary.
If possible, try to keep the college coach engaged in this. He/she may prove to be helpful should there be glitches down the line, e.g., rescheduling midterms or finals. This relationship will also be a factor when it comes to conflicts between team practices and your regular training schedule with your personal coach. This will also be critical when it comes to conflicts between international competitions and NCAA competitions. If you are a recruited fencer at an Ivy, for instance, you will have to go a long way to convince your coach that you need to miss the Ivy League Championships to fence in a World Cup in Bratislava. Re national events, NACs are usually scheduled so as to not conflict with international designated events. It happens, but not often.
You will also want to keep your outside personal coach, if applicable, in the loop. The days of building a training schedule first, and adjusting a high school schedule after the fact, are over. There will have to be some patience and some mature give and take when it comes to acclimating to a rigorous college course load. While your at it, you might also want to address NCAA competitions and team practices. Most personal coaches are not all that gung-ho about NCAA obligations, particularly when they interfere with the personal training and competition schedule. Determine your personal commitment to NCAA fencing and hold firm.
Avail yourself of tutors! Don’t wait until a subject proves a bit more challenging than expected or you fall behind. On this line, also try to establish consistent study buddies and/or study groups. These may well be your go-tos when it comes to getting class notes and keeping up with announcements made in class during one of your absences.
When it comes to travel, particularly international trips, squeeze time. These are kids. They are very adaptable. For an international competition, say occurring on a Saturday, leave Thursday, arrive Friday, compete, and come home Sunday. To the extent to which you might have taken an extra day or so on either end to take the edge of the travel or to spend some time in a particular country, don’t. For domestic travel, although it can be difficult, try to fly out the night of the competition, particularly if your event falls on a Sunday or Monday. Missed college classes are difficult to make up and every day you save will pay you back tenfold.
If you are trying to do multiple age divisions, e.g., Junior and Senior World Cups, the challenges will be magnified. This is one of the most difficult rows to hoe. May the force be with you on this one!
What can I say? First World problems?
Good luck!!!