A fact sheet on foreign language immersion programs, in which the regular school curriculum is taught partially or entirely in a foreign language, briefly discusses the following: (1) the structure and goals of immersion instruction; (2) the introduction of English instruction; (3) the eventual effect of immersion instruction on verbal and mathematical skills in English; (4) key ingredients of a successful program; (5) the advantages and disadvantages of the total and partial immersion program designs; (6) optimum grade level for beginning an immersion program; (7) the necessary commitment on the part of parents and participants; (8) staffing and staff utilization; (9) obtaining instructional materials; (10) the effect of the immersion program on the district's existing foreign language program; and (11) enrollment projections. (MSE)