As of today, joining classes for competitive exams and regular board exams have become a norm. So it is not very surprising to find that most students who want to take up Medicine or Engineering will join some classes or the other. Even most colleges alter their teaching patterns so as to complement that of the coaching classes.
Now getting back to Karlashukla Classes, I studied (infact I am studying) at the Vile Parle branch. People staying in Borivali and Mulund still come to this branch even though they have a branch in their neighbourhood because they feel the quality of teaching is better at the Vile Parle branch. I feel it should not make a big difference as most of the lecturers keep juggling between branches.
I joined for XIth as well as XIIth, I joined for XIth mainly because my basics were not very strong (especially in Physics) and because you need some stuff from XIth for CET also.
The teaching standards set by the Professors are really high. The professors are quite dedicated. So far I have had Winit, Agnello, Ujjwalla, & Visariya for Maths. Mahesh, Ram, Rahul & C.D. Mehta for Physics. Anil Mehta, Suresh & Pundit for Chemistry. Out of these only Winit, Mahesh, Suresh, Pundit, Visariya and to some extent Ram are good.
I do not disagree that at least some of these people have money on their mind and hence they take Private Tutions as well, but who cares as long as they do their work well.
The one let down however is the rude management. The peons and other non-teaching staff behave as if they are superior to even the professors. It is more likely for a peon to flick your phone than a professor confiscating it. They more often than not are very arrogant and proud.
Apart from the management the classes are pretty good.