How do WE communicate with the ISS?

Answer 1

there are come schools that have paid for a radio that goes up to the international space station

Answer 2

Communication with the International Space Station (ISS) is typically done through a network of ground stations located around the world. These ground stations send and receive signals to and from the ISS through satellites, enabling astronauts on board to communicate with mission control and conduct research. Various communication technologies, including radio waves and data networks, are used for exchanging messages, video calls, and telemetry data between the ISS and Earth.