@JRyman
Yes it is, to play in the second semester of college all you have to do is pass your first semester.
It is not that simple. The player has to be enrolled in certain number of classes to be eligible to play. At KU, the Athletic Department has volunteer monitors that make sure athletes go to classes, otherwise they might not be allowed to play or could even be suspended. Once the season ends, the school has zero leverage over a student-athlete that is leaving for ther NBA.
If a student-athlete leaves before the end of the semester without finishing the school work, the Academic Progress Rate (APR) is affected. Syracuse lost two scholarship when 3 players left school to prepare for the NBA before finishing the Spring semester. KU has been lucky so far that even student-athletes leaving early for the NBA. stayed on campus and finished the semester, and thus left in good academic standing and allowed KU to maintain its perfect APR. It is very likely that students planning to move to the NBA take the very minimum number of classes (electives) that will allow them to stay eligible, even if they are not making a meaningful progress towards a degree, so they can finish them early and leave in good standing.