Placement tests are assessments used by educational institutions to determine a student's skill level in subjects like math, reading, and writing. These tests help schools place students in the appropriate classes, ensuring they receive instruction that matches their abilities. Typically administered before the start of a course or program, placement tests can vary in format, including multiple-choice questions or written responses. The results guide educators in creating a tailored learning experience, allowing students to build on their strengths and address any weaknesses effectively.