Preparation classes for IELTS (International English Language Testing System) are designed to help individuals improve their English language skills in order to achieve a desired score on the IELTS exam. These classes typically cover all four sections of the exam: listening, reading, writing, and speaking. They provide guidance on test-taking strategies, practice exercises, and feedback on performance. Additionally, preparation classes may offer tips on time management, vocabulary building, and grammar improvement. It is important to note that while preparation classes can be beneficial, individual study and practice are also crucial for success in the IELTS exam.