 Parallel colleges were very popular and were, in fact, centres of education for the masses in the 70s through 90s.But by the end of the 2000s this system has come to a demise, following the state opening the higher education sector to private investors, which has caused a surge in the number of private engineering colleges and other privately owned professional colleges, which leaves many of the conventional (affiliated) degree colleges under-populated, ceasing the reason for the very existence of the parallel system.Tutorial colleges are institutions similar to parallel colleges with more limited scope.