Essay 2 (Please help me to revise it, many thanks!!!! )

One of the organisational cultures in the school is that educators need to demonstrate professional subject and curriculum knowledge . If teachers reach the targets, the education quality of students will be improved in the organisation. The leader develops the culture of professional teachers in every ‘all-member meeting’. Therefore, managers implement 'performance and appraisal’ to middle-managers and then the latter have the power to evaluate their groups. Brown states that performance and appraisal is a formal and structural system for evaluating the job performance of staff. However, middle-managers have different standards for performance and appraisal of employees, such as subjective judgement. Middlewood also argues that various elements influence performance and appraisal. For instance, evaluators have different standards for efficient teaching methods, therefore, the appraisal and performance should be flexible. As a result, employees develop a sub-culture to pass the performance and appraisal. The sub-culture consists of  understanding the evaluating indexes of their own middle-managers, instead of providing high a quality of education for pupils.

[Very good work.  Many of the modifications weren't for errors - just a better way to say something.]