Contact and advice centers for people with disabilities in Sachsen: https://www.behindern.verhindern.sachsen.de/verschiedene-kontaktstellen-in-sachsen.html
Responsible for the determination of a special educational needs is the State Office for School and Education https://amt24.sachsen.de/web/guest/leistung/-/sbw/Sonderpaedagogischen+Foerderbedarf+feststellen-6000483-leistung-0
Locations can be found here: https://www.lasub.smk.sachsen.de/standorte-3948.html
Contacts for parents and pupils in the schools are specially trained counselor at the schools https://www.bildung.sachsen.de/13361.htm and the school psychological service (https://www.bildung.sachsen.de/1278.htm).
The promotion of gifted and highly talented pupils is anchored in the Education Act of Sachsen. There is a system for support for gifted pupils at primary schools and Gymnasium (https://www3.sachsen.schule/bzb/begabtenfoerderung-in-sachsen/einordnung/).
The contact person for parents and pupils with special talents is the Counseling Center for Gifted Students (BzB): https://www3.sachsen.schule/bzb/begabtenfoerderung-in-sachsen/beratungsstelle-zur-begabtenfoerderung-bzb/