Generally speaking, this kind of composition is voluntary. Since it is voluntary, you don't have to write. But if it is forced by the Education Bureau, it must be written. After all, the education bureau is at the national level, and we have to obey the orders of the state.
The main purpose of the essay is publicity and education, so the content selection of the essay is mainly praise and experience. For example, the essay on the 90th anniversary of the founding of the Party can be written with love and praise for the Party. You can also write some thoughts and experiences about your work under the education and care of the party. Generally speaking, writing a composition is harmless to us.