1) Emphasis on rote learning
2) Studying for the exams culture instead of studying to learn
3) Really bad student-teacher ratio
4) Underfunded schools
5) Very authorization style of running schools which produces people with stunted social skills and stick obedience to teachers.
6) Some unqualified and idiot teachers who don't know what they're talking about.
7) Over emphasis on Math and science and not enough on civics, life skills or being a good citizen.
8) Teacher absenteeism in rural and government schools.
9) A culture of studying hard to get into the best college according to the marks you get in nationwide exams as it determines your future prospects.
10) Sports and other extracurriculars are pretty ignored as serious options to excel in.
11) History subject is basically state propaganda.
12) Sex segregated classrooms being quite common.
13) Lack of practical education
14) Girls are sometimes not even sent to school in rural areas.
15) Minor things like corruption and scams in education institutes.