Our system of Education is something else, starting from the primary system to the tertiary system. That of the the tertiary system their varieties of challenges it undergoes, for instance
* Over Population
* Outdated Curricula
* Lack of qualified faculty and equipment for studies
* Lectures Accepting Bribe (Sorting)
Talking about the over-population, the school authorities are no longer interested in the conduciveness of a class room, or has a limited set of person that is meant to be admitted in a department to ensure conducive learning, they admit to the extent that students now sit on the floor or outside the class room to take lectures due to lack of space.
Outdated Curricula. On this particular note, Nigerian universities are still making use of outdated curriculum to lecture their students, how do these universities curriculum prepare her students for the modern work force. Using my school as a case study, just imagine learning FORTRAN in this modern time, when other countries are leaning advance computer programming options
Lack of Qualified Faculty and Equipment for studies
Nigerian system of learning lack major equipment for learning, after being in the school environment for as much as your programme requires, then coming out to the public and you have nothing to offer due lack of necessary equipment for studies and conditions the students are being placed under.
Sorting in Nigerian Universities are now seen as a normalcy,
Lecturers in these universities are now adding to back logging of the educational system. Just imagine a student going for a job interview and is being asked questions related to his or her field of study and they can't come out with something tangible due to the corrupt process they've passed through.
OP, you gave mentioned many things here that are negatively affecting Nigeria educational system, though our lectures and teachers starting from kindergarten to the tertiary institutions are not well trained at the same time they are not properly paid, in the aspect of payment, most of them don't deserve the payment because they have nothing to offer, I blame this on government and the people.
As a matter of fact, Nigerian educational curriculum is much more outdated and whose fault is it, does it mean that our so called called professors in different institutions doesn't know what is obtainable and applicable, why is that is only in this part of the world we complain of abnormalities in this sector, during the military rule, our educational system was not porous as it is now may be strict instruction that may have consequences if not adhered to, let's not also forget that educational funding in Nigeria is very poor, government at all level should take this as major priority, supervise the activities of the lecturers and the student with strict sanctions, with this we can get somethings right gradually.