It depends how important I deem that information to how well my brain retains it. I have some form of cannabis in my life almost everyday and once your mind becomes accustomed to performing task while having THC in your system, it becomes easier to dose out for a specific task.
Not to mention Sativa, which is exactly something you would want for intellectual activity.
That being said, if you’re reading something important for school. Just stay sober, don’t take chances on retaining the info.