The present study was established to examine the effectof perceptual speed of high school students as predictors of mathematics achievement. A sample of 500 studentswas selected randomly and stratified in to locale , gender and type of schools from Palwaldistt.Haryana.A self madetest made by was employed with three five levels word comparison ,figure comparison, comparison of Roman-numerals ,Number /Formula comparison &Figure identification .The analysis was done by correlation n t-test.The findings suggested that Boys, Girls, Urban, Rurals have identical perceptual speed but there is a significant difference in govt. and private school.