4.Recaptulation(saying Aloud)
aka talking to yourself?
It's a good way of remembering things, perhaps the reading/saying and hearing double or even treble reinforcing the learning. I used it a lot for revision. However, as with anything, the less you use knowledge, the more you forget. Ties in with the thread about education and is it marks/grades or learning. For me you learn to pass, whether you've long-term learned depends how relevant what you learned is in your future life/career/courses.
Personally I feel school lasts too long, spoils the enjoyment of being a kid. What you need to know probably could be schooled over 3-4 years, the rest is just knowledge for the sake of it eg history, geography etc, and while it might give you a broader education, it's no better or more important than what you learn for pleasure later in life. Do I use Biology, Chemistry or Physics in any part of my life since leaving school/uni? Nope. Will I? Nope.
Funnily enough I was reading through an exam paper for Science, without having been in school for many years I was laughing at the questions and doubting the scientific value. There was a question about earthquakes and what a government could do to stop their population being killed. The right answers were so flipping obvious it was unbelievable, I mean they had the word "earthquake" in them. The other options including "telling the population to leave the country" ffs
I looked at other questions and there was so much you could work out without needing years of classes. I know I am older and hopefully wiser than I would have been at the age those exams are aimed at, but our GCSEs didn't include those level of easy points pickings. It's no wonder grades are rising so high year on year that they need A*s.