Language pre-requisites vary by program and not all will include a language requirement. For programs that do require previous language study, students should expect to continue that language while abroad. Some have required language coursework as one component of the program. At higher levels of language, the entire program may be taught in the target language and students may have the option or be required to enroll in local university courses.
Programs in English-speaking locations would not include study of another language by default. There are several opportunities for students to study in non-English speaking locations without previous study of that language. In these cases students are typically required to take a beginner level language course as part of an otherwise English language program.