Re: Standard of Education in Pakistan
Simple. You don’t give away the multiple choice questions in the study books. 
Just ask students to learn and understand the specific chapters, get the whole idea of the subject. And then in the final paper, devise a method of say 40 or 80 questions (40 for the lower grades and 80 for the higher, with the marking weight of the 40 MCQs being 2 and for the 80 being 1). Now, the remaining 20% should be for written stuff stuff in the end, like essays, translations, letter/application writing and other stuff. Of course, in maths this percentage could change a bit, with 50 going for MCQs and the rest for regular questions.
Point is, you have to discourage the habit of memorizing everything like a parrot, from the word go. Lower classes. 
If students believe they can cram their head with the full chapters, without not necessarily understanding it, then they will. They have a whole year to cram their heart out, anyway. And pretty much most do. And once they give the paper, most tend to forget what they crammed. It’s darn near impossible to retain it.
Now if your idea is to give people standard multiple choice questions, and ask them to cram those answers, then of course, it will defeat the purpose.