Self-paced education should never stop, throughout your entire life. What we need are skills for which people will pay, and that means education, but the baseline for the meaning of "skilled" is always rising. So in your spare time, you can teach yourself things through practice, or through websites like Khan Academy. For your personal gain and your personal skill set, it's pretty important to stay on the ball.
Mokalus of Borg
PS - I feel like I don't get enough practice in a lot of things.
PPS - I could, though, and I should.