<p>How about the divide and conquer system?</p>
<p>Parent #1 deals with kid #1.</p>
<p>Parent #2 deals with kid #2.</p>
<p>Whether this can be done in the vehicles the parents currently drive or whether it will be necessary for either or both parents to rent larger vehicles depends on how much stuff each kid has and how good the shipping arrangements are at the colleges (which you may not know for a while).</p>
<p>My daughter’s college had a special arrangement with a company that delivered packages to dorm rooms before the freshmen arrived (the packages had to be shipped about 10 days in advance). It worked great, but you paid through the nose for the privilege. Renting a larger vehicle would have been cheaper.</p>