Along with the other institutions that died in the 21st Century, organized schools are pretty much gone and haven’t reappeared as of the 24th century in any recognizable form. There are a few exceptions of course: The Commonwealth of Gotland has a permanent need for educated citizenry so they actually have mandatory schooling for everyone between eight and fourteen years old. Peimar has the School of the Chancellery to train government officials to carry out their tasks and the Society of Polymaths has something called the Lyceum, which is funded by the Republic of Hanö.
This of course leads to pretty low literacy figures, but in general, if your parents know how to read and write, they’ll teach you, since being able to read and write is useful for everyone and necessary for anyone who has a business.
The Gotland school system is simple: every single community has a schoolhouse with two teachers assigned to every class of 20 students. They teach languages, history, mathematics and various useful skills deemed necessary by the Gotland Council, for example basic sea navigation and use of firearms.
The Lyceum is an institute of higher learning, run by the Polymaths and funded by the Republic of Hanö. Despite the general bad administration in Hanö, the Lyceum has generally been considered to useful even despite not being controlled by some Hanöan political faction. The Polymaths teach the students astronomy, chemistry, physics, mathematics, history, literature and law. Some other minor subjects may be taught whenever the Lyceum has a guest lecturer who, for example, might be specialized in collecting myths and legends. Actual Polymath apprentices spend four to seven years at the Lyceum, while other students often only study there for two to three years. It’s important to note that the Lyceum actually has two separate curriculums: one for outsiders and one for Polymath apprentices. Students without Polymath affiliation don’t take part in fieldwork outside the Lyceum, while Polymath apprentices frequently spend time at the Library of Jurmo, the Tuorla Observatory and various other Polymath facilities.
Peimar realized a while back that for efficient government, they need educated bureaucrats, preferably people who haven’t been trained by the Polymaths, since Polymaths in the end owe their affiliation to the Society of Polymaths and not the crown. The School of the Chancellery has two courses it offers to promising youths: the Military Line and the Chancellery Line. The Military Line is in practice an officer candidate school, where student learn about logistics, tactics, navigation and the use of arms. The Chancellery line educates students in matters of law, econonomics and other such matters. A significant amount of the Treasury’s Fodges are Chancellery-schooled.
In civilized regions such as Svea, Göte, Vende, Pomerania, Dal Riada and other such places, there are no government school systems, but private schools and tutors of course exists. Kirkoslet has a tradition of private tutors but are considering a public school system. So, if you got the coin, you can find some kind of education almost anywhere in the civilized lands.