Calculus is for many students the pinnacle of math learning. In reality calculus is just the beginning of the many topics in Mathematics. Calculus is necessary for all those who are in the STEM programs. Science, technology, engineering and math majors all need calculus for their career. This however is not the limit of all you need calculus. Business majors also need calculus for completion the degree program. During the summer I offer short prep course in calculus and have found good results for my students who take calculus in the fall.