Why was scout's first day of school a terrible disappointment to her?

Scout could already read and write well and her teacher was not very good; Scout is more experienced than the class already. Atticus tells her to keep going to school, but promises to read with her every night if she keeps it a secret.

Just pretend that your talking to a empty room

For example you could start a retail clothing store because you would need to have skills in business and you could start an photography business you would need to have skills in photography. hope this