Yeah traveller families don’t like their kids mixing with non-traveller people (aka country people or gorjas) so they remove them from school usually before high school as we are seen as a bad influence, especially for girls. By that age the boys are usually working with their dads and uncles and girls are helping their mums with cleaning/cooking/childcare.
Obviously there’s some exceptions and there are loads of travellers that have friendships/marry out their community but generally speaking they are strict in that they don’t want their kids mingling with regular people. Some wealthier travellers do get their kids a tutor for their senior schooling. If they do get any qualifications it’s usually within trades. On the whole though, given the fact that most of the jobs done by the males are labour and women aren’t expected to work, education really isn’t a priority. Hence the poor spelling that is rampant among them.
They are very traditional in that they are to only be married to one person in their life with majority of them are very staunch Catholics (and will only leave the home when they are married), so obviously sex outside is very much forbidden alongside divorce and if a woman is getting cheated on she’s just expected to get on with it, even more so if she has kids with him. The boys usually have a lot more freedom than the girls, who are seen as sneakier and less truthful than boys unfortunately.