The 1969 study, the first in a series which attempts to reflect the impact of selected summer migrant programs, yielded the base data for the ongoing 3-year study. Some 228 Mexican American children aged from 4 to 8 years, enrolled in special summer migrant classes, were given the (1) Peabody Picture Vocabulary Test (PPVT), (2) Wide Range Achievement Test (WRAT), and (3) Sequin Form Board (SFB) from the Arthur Point Scale. The purpose was to identify performance levels in specific learning skills (vocabulary, reading, arithmetic, spelling, and motor performance), to establish whether those levels were low, and to suggest implications for future educational programs. The classes were located in Hollandale, Hector, and Moorhead, Minnesota and in Casselton, North Dakota. The results indicated (1) below average scores on the PPVT and WRAT, (2) average scores on the SFB, (3) no significant sex differences, and (4) differences in age which correlated with the time the youngsters were taken out of a Spanish-speaking environment and placed in an English-speaking, structured, educational environment. Performance deficiencies were due primarily to a lack of English language skills. (BD)