Patience is a valuable trait, especially when it comes to learning and growth. One synonymous term for "school in patience" is a training ground. A training ground is where one can develop patience and other essential skills to achieve their goals. Another synonym is a laboratory, where one can experiment, make mistakes, and learn through trial and error. Similarly, an apprenticeship is a learning opportunity that emphasizes the importance of patience, consistency, and hard work. Lastly, a journey, especially a challenging one, requires perseverance, resilience, and patience. Embarking on such a journey can help one develop a strong sense of fortitude and character.