Posted: Thu Jan 4, 2018 5:25pm
Personally I think that as teenagers they would struggle academically in the Spanish school system unless they have Spanish as a second language already.
It's much easier for very young children to settle in and learn the language but I would be reluctant if it were my children to take them out of any UK school system at this stage in their education. Much better to let them finish and take their exams in UK and possibly see what they want to do then (maybe Uni, college or apprenticeship/work ) as the opportunities for work are not good in Spain at all. Particularly decent reasonably paid jobs which usually go to Spanish speakers. Pay is not so good as UK either.
Depending where you want to live in Spain, if it's not a big city then they may be 'small town' bored and even if you are happy in Spain it could be a problem for them as time goes on .
We had friends who returned to UK after a few years because of their teenage children. One of the kids particularly kept going back to stay with Grandparents and could not settle in the school and eventually they all returned rather than split up the family.
It's worth thinking about. Spain is a lovely country but for older children still in education it may be a difficult transition after the first few months fun of pools and beaches etc wears off.