COST Actions can share knowledge and support collaboration also through Training Schools. Training Schools can be organised by a COST Action on related research topics and can provide dissemination opportunities for an Action's activities. Training Schools provide intensive training in emerging research topics within the laboratories and organisations involved in the COST Action. Participants are mainly, but not exclusively, young researchers involved in COST Actions. Training Schools also cover appropriate re-training as part of life-long learning.
Within TINNET six Training School have been organized dedicated to different topics:
| Date | Location | Local Organizer | Title | number of participants |
| 12.05.2015 | Prague, CZ | Prof. J. Syka, Dr. Oliver Profant | Training School on Auditory Science | 18 |
| 10.-12.05.2015 | Nottingham, UK |
Prof. Dr. Deb Hall, Dr. Haúla Haider |
Tinnitus Training School | 10 |
| 15.-20.04.2016 | Lisboa, PT | Dr. Haúla Haider | How to avoid the pitfalls in data extraction and evidence synthesis in systematic reviews: perspectives on both quantitative and qualitative data through a worked example | 9 |
| 09.-11.12.2015 | Salzburg, A | Prof. Dr. Nathan Weisz | M/EEG Analysis in Tinnitus | 24 |
| 14.-15.07.2016 | Ulm, DE | Dr. Ruediger Pryss | Database Training School | 16 |
| 11.-13.10.2017 | Milan, IT | Luca del Bo | Training School on Tinnitus clinical management and its EU-wide dissemination | 26 |
