they were called Aduma or Aduba or something
Teacher training schools were called "normal schools" because they aimed to establish standardized teaching practices, or "norms," for educators. The term "normal" also referred to the professional training of teachers to adhere to a set of standard educational principles and methods.
In the medieval period, scribes were typically young adults, often starting their training in their teens, around 14 to 16 years old. Many scribes were educated in monastic or cathedral schools, where they learned to read and write Latin and became skilled in calligraphy and manuscript production. Some scribes continued in this profession into their 30s or even later, depending on their specific roles and the demand for their skills.
The civil servant from Ancient Egypt is called scribes or sekhau.
An organization called New Tribes Mission has training schools. They have training schools in America and Australia and maybe other places. Click on 'related links' below to go to their website. There are two links.
Scribes received training to write hieroglyphics. So did priests and royalty.
Certification program
Many if skilled would be classed as scribes
There are trade schools specifically devoted to this type of training. The name for this type of training is "journeyman training".
What schools in Maryland offer training to be a Blacksmith?
The special gladiator training schools were called "ludi" (singular: "ludus"). These schools were established throughout the Roman Empire and were designed to train gladiators for combat in the arena. Each ludus would typically house a group of gladiators under the supervision of a trainer known as a "lanista." Training focused on various combat techniques and physical conditioning to prepare the gladiators for their matches.
Scribes
Check out the Diesel Mechanic Directory of Schools. The have a list of featured schools, online schools, and local campus schools. There are links to mechanic training schools at the Guide to Online Schools.