The importance of English language skills in international teaching
English language skills are important for all subjects in international teaching.
English is so important in an international school environment as the skills taught in English language underpin every other subject. Whichever language you are completing education in, it will benefit you to take a language course in that language. Reading and writing are integral to access any subject and English language courses focus on extending these skills.
Comprehension skills such as reading for meaning, making inferences and deductions, and extracting information from a text, when taught explicitly, are beneficial for the study of all subjects, both in school and for lifelong learning. All learning includes an aspect of reading, and the more effectively you can do that, the more efficiently you can learn.
Even in mathematics, arguably the least literacy based subject, you need to be able to read and comprehend written problems, drawing out pertinent information in order to apply it to other situations.
Writing skills, such as accuracy and writing to suit a particular purpose/audience/form are essential for clear and targeted communication.
Whilst these skills can be taught by other subjects, no subjects can devote as much time and expertise to them as English language. In exams at school level, creative subjects, such as art, drama and graphics, all contain a written element.
However, more importantly, to be successful in any of these fields, one needs to be able to effectively communicate meanings and messages targeted at a specific audience.