How many courses do you have to take get high school diploma all together?

The exact number of courses required to graduate high school varies by state, and even by school district within a state. There's no single national standard. Generally, you'll need to complete somewhere between 22 and 26 courses, but this can fluctuate significantly. Some states have more rigorous requirements than others. It's best to check with your specific high school's guidance counselor for the most accurate information.