A sample was created by 220 children attending the 9th grade of Czech and Slovak elementary schools, to whom the methods for the classic and social intelligence measurement were administrated. We measured the classical intelligence via TIP (Test of Intellect Potential; Rican, 1971). The 21-items scale - TSIS (Tromso Social Intelligence Scale; Silvera, Martinussen, Dahl, 1999), consisting of three factors: Social Information Processing, Social Skills and Social Awareness, was used to measure the social intelligence. The results obtained show satisfactory reliability of the Tromso scale. The correlation analysis yielded the significant relations between the measurements of social and abstract intelligence, mainly in the Social Awareness dimension. Significant differences in measures of social intelligence, with regard to gender, are probably determined by the specific age structure of the sample.