Just study. People do it all the time.
Once you've completed differential and integral calculus, multivariable calculus is often next step, and beyond that there is advanced calculus which generalizes calc to multidimensional spaces and uses vector-valued functions. Often concurrent with high level calculus in college courses is linear algebra and differential equations. There's nothing really 'after' calculus, because any topic in mathematics has a myriad of problems, theories, and potential applications to be explored. Calculus is, however, normally the highest level of math taught in US high schools and is a basic required course for any science/engineering major in college.
To be a biologist you must take Calculus for your biological Science in college as your major level math course to graduate.
To apply for admission to vet school in the United States you must complete at least Calculus I in undergraduate college; some vet schools require Calculus II.
Calculus is a higher level math
Yes.
Calculus is not regularly required for college.Specifically, if you want to be certain, every college has its own courses that are mandatory. If calculus is not one of them, you're in. However, as well, if you already have a major, visit the department at the college you are in.Ask the department which courses are required for your major. And that should be all.
Almost every professional occupation out there requires about a Trig or Calculus level.
Yes, most premed students do take 3 semesters of calculus in college.
No. College Algebra and Precalculus (or Trigonometry) are enough preparation to take Calculus.
Calculus is commonly taken as a first year course in college, but can be taken as an advanced course late in high school through programs like AP Calculus.
College Algebra prepares you for calculus. A course requirement depending on your major.
Advanced Placement Calculus. It's an intense, college level calculus course taken by high schoolers. At the end of the course, in May, students can take the AP exam, in which they can obtain college credit depending on what score they receive (graded on a scale of 1-5, most colleges accept a 4 and 5 as credit, and sometimes a 3).