Secondary education is for (in no particular order):

Learning how to think
Facilitating flexabilty in thought
Fostering an attitude for, and ability to, engage in life long learning.
Being prepared for adult life, not a specific job as such.
Fostering a wide range of interests and talents
Promoting self confidence and self motivation.

All of the above under the umbrella of the 'traditional' school subjects - but other students may acheive this and are better suited to more 'alternative areas of study

I think post 18 education is where ant specific job preparation should take place.

The other two vids are slower, more informal and have less jargon.