I do passionately believe in the tri part system I grew up in (70's)
Grammar for the academics
Techincal for the hands on
Sec Mod for the pen pushers
FWIW I'm a pen pusher and paper circulator 
Oddly, 4 of us at primary, we all went to different secondaries (S) mixed comprehensive (C) girls tech (L) the elite mixed grammar (Me) girls sec mod
this is how we panned out at 16:
(L) obviously got the best O level results, followed by (Me) then (C), (S) did CSEs
(L) did not do A levels, (Me) did one year then worked abroad, (C) did nicely at A level (S) went straight to work, no 6th form
At 17/18 this is how we panned out
(L) dropped out, (C) got pregnant (S) married well (Me) had the only thing discernable as a career back in the 80's and 90's. I am the only one who married late, had late children, who isn't a grandparent.