Language learning is the process of learning to speak and understand a foreign language. It helps children to acquire practical commands of language. It is a result of deliberate and conscious effort for a better understanding of foundational skills of language learning.?Diagnostic tests:Diagnostic tests are designed to point out inadequacies in specific skills. The main objective of a diagnostic test is to locate areas in which additional instruction is required and for which teaching methods need to be improved.These tests are administered at the end of the language course to find out deficiencies of the students with a view to plan remedies. It is a comprehensive test that provides feedback to teachers and students on their strengths and weaknesses.These tests are very helpful in the process of language learning as it helps the language teacher to:know the difficulties in the student's understanding.diagnose those difficulties with the necessary help.remove educational barriers through remedial teaching.identify learning difficulties the students face in English.determine the student's individual strengths and weaknesses.Hence, we can conclude that When Mr. Garvit uses a diagnostic test in his class to identify students with learning difficulties.