THE INTELLECTUAL TEST DIFFERENCES BETWEEN NEGRO AND WHITE FIRST- AND FIFTH-GRADERS OF DIFFERENT SOCIAL CLASSES WERE CONSIDERED. THE LORGE-THORNDIKE, LEVEL I, PRIMARY BATTERY WAS USED FOR FIRST GRADERS, AND LEVEL III FOR FIFTH GRADERS. IT WAS CONCLUDED THAT RACE INFLUENCE TENDS TO BECOME MORE MANIFEST AND CRUCIAL AS THE SOCIAL CLASS LEVEL INCREASES. THE HYPOTHESIS USED WAS THAT INCREASED PARTICIPATION IN THE CULTURAL MAINSTREAM TENDS TO INCREASE INTELLIGENCE LEVEL. THE ABSENCE OF A FATHER IN THE HOME ADVERSELY INFLUENCES THE CHILD'S INTELLIGENCE. THE CHILDREN WHO HAVE HAD PRESCHOOL EXPERIENCE SCORE SIGNIFICANTLY HIGHER THAN THOSE WHO HAVE NOT. DEPRIVATIONAL INFLUENCES HAVE A CUMULATIVE IMPACT. IN SUMMATION, THE NEGRO GROUP SHOWS GREATER DEPRIVATION THAT THE WHITE GROUP. TABLES ARE USED TO GIVE DETAILS, AND REFERENCES ARE OFFERED.