Finding a good GRE trainer involves several key factors to ensure you receive quality guidance and preparation. First, look for trainers with strong academic backgrounds and proven success in the GRE, ideally those who have scored high themselves. They should have a deep understanding of the GRE format and be able to teach strategies tailored to each student's strengths and weaknesses. It's important to check for trainers with experience in delivering personalized sessions and providing actionable feedback. Research reviews and testimonials from past students to gauge the effectiveness of the trainer. You can also consider platforms like Wyzant or MyGuru, where you can choose trainers based on their qualifications, teaching style, and ratings. Lastly, ensure the trainer offers a structured curriculum with regular practice tests to track progress and improve performance in all sections of the GRE.