As the title says gurukul . It is one of the best institute for preparation of iit and other engineering entrance examinations.They will teach you like their own kid and u can ask them your doubts any time . Here u have to call teachers bhaiya or didi instead of sir or madam.coming to study quality they of quality teachers most of them are iitns n ex vmciian.They have both regular and weekend classes and duration of class is around 3 hours. It is situated over huyndai showroom and is at walking distance from anand vihar metro station and anand vihar bus stop, so connectivity is also good .Overall it is one of the best institute for the preparation of iit jee or other engineering entrance exam as I myslef was student of this institute for two years