Originally Posted by
fhfly
I noticed that most of these schools have Cessna 152s made in 70s. (mostly 1977~1979).
Is this a common thing that flight schools have this much old aircrafts?
Also, can you give me any tip to figure out whether the school has well-maintained aircrafts, safety policies, and good instructors?
Yes, that is very common and they are perfectly safe if maintained. As part of their part 141 certification/inspections the FAA should be checking maintenance records for their aircraft. You could ask to see records showing that they've done 50 hour, 100 hour, and annual inspections.