The long-term stability of verbal and nonverbal IQ scores was studied for 146 Spanish-surname students. About 30-50% of Spanish students do no speak English when they begin school. The California Test of Mental Maturity or the Lorge-Thorndike Intelligence Tests were administered in grades 1,2,4,7,9, and 11. The stability of IQ scores for Spanish-surname students is highly similar to the stability pattern of a representative group of about 4,000 students from the school district. Verbal IQs at grade 4 show a high relationship with subsequent scores for Spanish-surname students. Changes in nonverbal scores are relatively small after grade 7 for both groups. Total IQs have a stability pattern similar to that of verbal scores for both groups, but the increase in nonverbal IQ from grades 4 to 7 is greater for Spanish speaking students. (Author/RS)