What is the one thing that should be taught in school that isn’t already?

[u]Lots of 'HOW TO's ![/u]

Wallpaper a wall.
Paint effectively.
Lay carpet/flooring.
Basic Plumbing.-unblocking a sink trap/toilet etc.
Effective budgeting. How to tell a bargain from a fix !
Money management. including Taxation/Planning for upcoming costs/saving.
Prioritizing.
Basic childcare.
Meal planning/preparation.
Basic 'you and the law'.
Apply for grants and unemployment etc.
Coping strategies for grief and loss.
Basic motor vehicle maintanance.
What to do in the event of a death.