The guy who wrote this has not real life experience.
You know how much per year is deem to be high income family? $80000 !!
After tax, you can only get about 3000 to 4000. Where is the 5000 comes from?
And you know how many people can get this salary given that only one guy works?
The fact is the government does not want to pay so much to extends teacher's working time.