„The costs of private schooling have risen considerably. By 2018 the average annual fee before any extras had reached £14,280 for day school and £33,684 for boarding school: in real terms about 60 per cent above the figures for 2000, and three times the 1980 fees.“
Dr. Golo Henseke u. a., Income, housing wealth, and private school access in Britain. In: Education Economics, 29:3 (2021), S. 254.