Final answer:
The term for being unable to reach out to a school or region by phone or email is known as a 'communication blockade'. This reflects a scenario where communication is difficult or impossible due to various barriers, creating isolation.
Step-by-step explanation:
If you are not allowed to reach out to a school/district/region by phone or email, they will call that a communication blockade. This term is often used to describe a situation where communication lines are purposely cut off or restricted. The concept can be understood by considering the scenario where students from different parts of the world want to communicate remotely. Due to various reasons, such as high cost of travel, they might prefer sending messages instead of meeting in person. A historic example includes the experiences of the Little Rock Nine, where due to lack of telephonic communication, one of the students, Elizabeth Eckford, was not aware of the arrangements made for her safety on her first day at Central High School.