One
need to understand Rahu and its nature because its a shadow planet, it
doesn't own any rashi in the horoscope/kundli so it acts like an agent
of that house. Rahu likes materialistic pleasure of life. It will create
an illusion in the mind of the person effect by rahu, to take short
cuts and unethical path to lead towards success.
Rahu’s nature of
achieving results is by hook or crook. It is seen that due to this
nature the person effected by rahu often get trapped into problems. The
lust for materialistic pleasure will force the person to choose an easy
unethical way to achieve it.
It is because of this greedy nature of Rahu for enjoying materialistic pleasure actually demotivate a person from study
and therefore a person cannot correctly concentrate himself for study.
This is the reason why most astrologers says that rahu mahadasa is not
good for education.
This is a general view
and it will vary from person to person as there are many other factors
that can put its impact on the result of rahu.
