What are some actually educational j-dramas?

Hello! I am looking for actually educational j-dramas. Whether it is language, history, politics, anything! Just the most accurate and real representation of Japan is enough. I wonder if anyone has some good titles to suggest? I know the "Nihonjin no shiranai nihongo", and I watched the first two episodes forever ago, but I don't know anything else. Thanks!

Dragon Zakura - it gives study techniques and focus on high schoolers aiming to enter the prestigious Tokyo University

if you dont mind an eyes opener kind of show then 

Going My Home

noted that it rich on daily life lessons and social commentaries but never in a way shoved it into the audiences instead more in delicate manner