How quickly should students earn XP?
On average, we've seen that students tend to earn about 1.5 level's worth of experience per month (for a class that lasts a year). Over the duration of an average course, this is about 1,000–1,500 XP per month.
Naturally, these results can vary. For example, after only two months, some students may be at Level 2 while others are already at Level 4. It can also depend on your evaluation system and when you deliver grades. If you hand out evaluations and grades irregularly, students will earn XP at an irregular rate. By the end of most courses, we've observed that the majority of students end up somewhere between levels 10 and 13.
The level required to “max out” a character is 18, but few students, or none at all, will reach that Level.
For that reason, we strongly recommend that you find a creative way to reward winners.
You can learn more about awarding XP here.