* Mathematics: This is crucial. You should take at least four years of math, including Algebra I and II, Geometry, Trigonometry, and ideally Pre-calculus. Some universities may require Calculus I as a prerequisite for admission or recommend it strongly.
* Science: Physics is absolutely essential. Chemistry is also highly recommended, and biology is helpful, depending on the specialization you might choose within mechanical engineering.
* English/Language Arts: Strong writing and communication skills are crucial for success in engineering. You'll need to be able to clearly and concisely explain technical concepts, both orally and in writing.
* Computer Science (recommended): While not always a strict requirement for admission, a foundational understanding of computer programming is becoming increasingly important in mechanical engineering, especially with the rise of CAD software and simulation tools.
How long?
The time it takes to complete these prerequisites depends on your high school's curriculum and your pace. Most students complete these requirements within the standard four years of high school. However, some students might opt to take additional math or science courses outside of the standard curriculum, or take AP or IB level courses to gain college credit and a head start.