Regardless of the reality of capitalism, work must be done in order for people to eat. That work could be actually plowing fields and picking fruit. Preferably, it is building and configuring machines to plow and pick.
Public education should be about enriching lives. A large part of that is teaching people the skills they can use to satisfy material needs.
All of this remained true under governments that humanity has so far built which strive to abolish capitalism. If you insist that we should not try to improve the human condition until we have abolished capitalism, then it is your burden to explain how to do that.