We've all been through the "system" at one point, or about to finish, and I'm sure a large majority of you would agree that it's highly ineffective at actually producing it's final goal: preparing you for life and getting you a job or further schooling. Take for example what my state requires for me to graduate from high school, I need to take an art class. How does an art class get me a job in my career in IT? Most the of the core requirements are sound but anything outside of the basic math/science/social studies are absurd. Take another example: English courses. I've been learning the same basic grammar since the 6th grade and most of the books they want you to read are outdated ideas that my parents grew up with. Then finally in my Senior English class they ignore most of that bullshit and focus on stumbling your way through the SAT's written exam. That's all most of the final two years of high school was, trying to make sure you can bullshit your way through one test or another.
The system I'm proposing would go as followed:
It starts off as a primary school, here it would focus on teaching you basic skills such as math, sciences, ability of the English langauge, social studies, life skills, and a mixture of other classes to try and help students find a career. Life skills would focus on installing proper hygiene, diet, and exercise. The career classes would first focus on helping finding a niche to place students in for the next step in schooling.
After that the students would be placed into a higher level of schooling that would increase the levels of math and sciences. The whole focus of this step would be to find a placement for their next level of schooling and a possible career. The career classes would be much more diverse to choose from and students would start to pick a possible future. After they have picked a future path and their mastery of the required levels of math, sciences, ability of the English langauge, social studies, and life skills they would be able to move to the final level.
This level would be around the age group of high schoolers. At this level it would focus primarily on the student's career choices. If they were to pick a career in computers for example they would take classes that help build a background in programming and hardware. This level of schooling would be very flexible to prevent the college phenomenon of switching majors every few weeks. The whole purpose is to make sure you have a future and the background to build it. They would be sent to different schools focusing on the fields they want to go into to. Students who do not want to go into higher schooling would receive workforce training and be prepared for their life.
The final stage, if needed, is to go to a "college" level and learn your final skills. An example would be people going into the medical fields, would go here for their specialized job training with no need of extra pointless classes since they have already had a background built by the previous levels of schooling.