In linguistics, diglossia is a situation in which more than one dialect or language are used by a single language community. This is the case with Arabic, as its speakers are spread throughout the world, with the vast majority based in the Middle East and North Africa.
It is only natural that the community developed regional dialects influenced by the different varieties of the Arab culture. Modern Standard Arabic remains the language of official media, official documents and education, but the usable Arabic is dictated by the distinct regions.
Egyptian dialect is widely known due to the movies and TV shows coming out of Egypt constantly, since it has been the biggest TV and film-producing powerhouse of the Middle East for decades.
The region itself attracts many travelers and foreign workers, and learning the local dialect truly helps, since some words might be different from Modern Standard Arabic. Of course, knowing the foundation works, but at the end of the day, if people want to get their hair cut, negotiate with the taxi driver or ask around what would be a good restaurant choice, the student should learn Egyptian Arabic.
There’s also one more reason any Arabic student should speak a dialect: it’s basically the only way to prove a person knows the language. Not to mention that it enables the speaker to get closer to the local community.
The Egyptian dialect course offers the same variety of topics and quizzes as before, but with words and structures usable in colloquial Egyptian, helping any student whose main goal is learn to speak Arabic regionally.