Tonbridge County Secondary School 1949-1950?...

I've just acquired some old school magazines from the late 1940s and early 50s for Tonbridge County Secondary School for Boys. Now was that the name for Sussex Road before it became a primary school or was it Slade or another school that doesn't exist anymore perhaps? This is where my lack of local knowledge, being a man of the North whose been down this way for 25 years or more, really shows up. Any true Tonbridge thoroughbreds out there will instantly know the answer and probably think TonbridgeBlog incredibly dim for not knowing!...