This manual presents an admissions scattergram as a tool to help school counselors who are working with high school students making college decisions. The approach described in the manual encourages student initiative in exploring, discovering, and deciding by following a rational process of understanding how to make an appropriate decision. An admissions scattergram is defined as the charted application history of students from a certain school to a certain college. Reasons why admissions scattergrams have not been used in the past are explored and suggestions are offered for collecting the data needed to create a scattergram. It is noted that the most comprehensive survey on selective admissions practice concluded that in most selective universities grades and test scores constituted about 75% of the rationale to admit or deny admission. The admissions scattergram is described as focusing on relating test scores and grades by assigning X, the horizontal range, to be the test index scale and Y, the vertical range, to be the grade point average scale. The scattergram format is presented and ways to use a scattergram in counseling college-bound students are discussed. (NB)