bleu, it seems you are very new to DOHA. Hence wish to give you the route from AL SADD.

--- From Al Sadd, you are reaching Sport Roundaout ( Grand Regency Hotel ) ...
--- Turn left...
--- You reach a very big Rondbaout-cum-Signal ( Al Rayyan Interchange )
--- Turn Right
--- Go Straingt till you reach Al Gharaffa Flyover ( also
called Immigration Round about )
--- Turn left
--- Go straight ... Count the 3rd Round about
--- Take U turn ( Come back ) .. You can see your right
side the QF ( Qatar Foundation ) campus.
Qatar Academy is one of the institution within the
campus