Translation of schelten

I hope you could understand my last letter to you. You see, when I write in Spanish I am not very confident. I always question myself and each and every sentence takes about fifteen minutes.
Every school has some narrow minded teachers who are not willing in investing in progressive educational process. They do not grasp that schooling methods today are different from last century's methods.
We landed at the same airport were we have started our trip three weeks earlier (before continuing to Cambodia), however this time we would stay for two days in the city. We were back in SE Asia.