There are three major classifications of foreign students in the United States. "I-20" students are those who are in the country only to attend school. These students must attend an approved educational institution full-time or face deportation. Aliens who are permanent residents or who are visiting but meet residence requirements are generally entitled to free public education. The third category of foreign students is composed of illegal aliens. There is currently some question as to whether these students meet residency requirements and are entitled to tuition-free education. This question has been addressed in several Texas cases recently, with decisions going both ways. An important factor involved in these cases is whether illegal or undocumented aliens are entitled to equal protection under the Fourteenth Amendment, an issue not yet resolved by the courts. (Author/PGD)