If your study period is short, it may not be ideal for building a strong foundation in English or preparing for official exams such as TOEIC or IELTS.
For a short-term study abroad program of 1–2 weeks, it is best to choose a course that offers a large number of one-on-one (1:1) classes and focuses on speaking. If you are a business professional, you may also consider a business course that covers topics related to your field.