The document discusses several college readiness tests administered by ACT, including the ACT, PLAN, and EXPLORE exams. The ACT is the primary college entrance exam required by most four-year colleges. The PLAN exam helps 10th graders prepare for the ACT and guides their high school course selection. The EXPLORE exam for 8th and 9th graders explores career options and helps students prepare for high school coursework and post-secondary education.