Band 5+: You made a mistake in classroom. Write a letter to your teacher. In the letter: state your apology; describe the situation; write about your promise to change.

The letter addresses all three bullet points: it states an apology, describes the situation (making the classroom crowded and distracting students), and makes a promise to change. The tone is appropriate and the letter is generally clear. However, there are minor lapses in clarity and grammar (e.g., 'apology' should be 'apologize', 'I did not like to make' is awkward, and 'gave rise to students who were distracted' could be more natural). To improve, ensure precise word choice and sentence structure, and consider adding a bit more detail about the specific mistake to fully satisfy the task. The letter falls short of the required 150 words.

The letter is logically organized with a clear introduction, body, and conclusion. The apology, description of the situation, and promise to change are all present and easy to follow. However, the flow could be improved by using more cohesive devices to link ideas smoothly. For example, the transition from the apology to the description of the situation is abrupt. Consider using phrases like 'The incident occurred when...' to enhance coherence. Additionally, the final sentence could be more clearly connected to the main purpose of the letter.

The vocabulary used is appropriate for the context and shows a good range (e.g., 'inappropriate behaviour', 'dissatisfaction', 'distracted', 'remarkable marks'). However, there are some awkward phrasings and word choices that could be more natural. For instance, 'I did not like to make the classroom crowded' is unclear; it would be better to say 'I did not intend to disrupt the class.' Also, 'gave rise to students who were distracted' is awkward; consider 'caused distraction among students.' Overall, the lexical resource is adequate but lacks the sophistication and naturalness of a higher band score.

The letter contains several grammatical errors and awkward structures that affect clarity. For example, 'I am writing to apology' should be 'I am writing to apologize.' The phrase 'I did not like to make the classroom crowded' is grammatically correct but semantically unclear. Additionally, 'my mistake gave rise to students who were distracted with my action' is grammatically incorrect; it should be 'my mistake distracted other students' or 'my action caused distraction among students.' The sentence 'I promise you to change my behaviour' is also awkward; it would be better as 'I promise to change my behaviour.' There are also issues with punctuation and sentence structure that could be improved. To achieve a higher band, focus on using a wider range of grammatical structures with greater accuracy.