Hello. Although you have informed the text to which this question refers, you have not informed the specific part of the text to which you are asking and referring, which makes it impossible to answer that question in a specific way.
However, when it comes to "One Friday Morning" we can consider disappointment as the climate of history as a whole. That's because in these stories we are introduced to a black girl who was prevented from following her dreams and had her talent reneged and devalued because society was racist. In this way, the reader is disappointed by a very promising young black woman who was prevented from pursuing the goals she had.
The author's main purpose was the explain that the Community Service Council was effectual to high school students. The personal backstory was to add more evidence of the effectiveness.
