I was the last year of entry into Hove Grammar in 1977. They abolished the 11+ after that. Although we became Blatchington mill in 1979, we kept our all boys class and pretty much the same teachers through to O levels and me leaving in 1982. Then went to BHASVIC - as it had no 6th form.
Duplicate. (see above) - but had popped into say as well that yes, same site. The Nevill and HCGSFB were two neighbouring sites which merged to become Blatchington Mill in 1979. I was there 1977-82.