… well, actually, you can start by shutting up.
Then, while you are sitting there quietly read this: Why Teaching Is Harder Than It Looks.
Then, add your advice about how we can fix our system of education to the comments below. But each suggestion must be paid for (with money) and fit into the schedule (by paying someone to do what you suggest instead of what they are at present required to do).
Which means, ultimately, there is one fundamental answer to improving our system of education: Throw money at it. For starters, stop taking money away from it. The, put more in.