Often thought I was one of the (very) few people using BSA (as was) correctly; indeed it was for "continuity of education".
Senior Daughter and Son-and-Heir were at the local State School, she about to start her sixth form, he about to embark on his pre-GCSE two years.
Fortunately (and unusually in the State sector), the School had a Boarding House, so when Norn Iron beckoned yet again, they could stay where they were (continuity of education - geddit?) - with a little help from BSA - for the 2 years Self, Milady Teeters and Junior Daughter were off to EGAA - again.