My daughter was at NLCS (day school girls)
Like the London selective grammars like Henrietta B it is very hard to get in so those who leave tend to get high marks, but of course not everyone - teenage hormones see to that with many a child from all sectors. Actually let m e see if I can compare those two private and state:
NLCS first private
"INTERNATIONAL BACCALAUREATE 2020
This year’s results for the IB Diploma were derived from externally marked and assessed work submitted by our candidates. We were delighted that our students once again achieved so highly in this challenging and enriching qualification, achieving an average score of over 41 points. These results placed us again among the best IB schools in the world.
Three of our students achieved the maximum score of 45 points, something usually only achieved by around 150 students out of 160,000 candidates across the globe.
GCSE, IGCSE, A-LEVEL AND PRE-U 2020
This year’s results were derived from a combination of Centre Assessed Grades and a statistical algorithm administered by the examination boards.
The headline figure of 55% A* at A level and Pre-U represents the strongest performance of a cohort of students at this level in the School’s history.
Similarly, 96% of all grades awarded at GCSE level were at A* equivalent (grades 8 and 9).
The results from the 2020 series of examinations are truly exceptional, and we celebrate them alongside the qualities of perseverance, flexibility, good humour and intellectual curiosity that characterises our students.
To download a full break down of all 2020 Examination Grades..."
Now let us look at Henrietta Barnett.
"2020
A level Examination Results 2020
Huge congratulations to Year 13 on their impressive results. They were a brilliant year group who have led the school with integrity and kindness and we will miss them! We wish them all the very best as they head off to top universities to study a wide range of subjects. We want to thank them for all they have done to make HBS such a vibrant and caring community and we look forward to hearing about the wonderful things they will all go on to do in the future.
Over 50% of grades were A*
Over 87% of grades were A* or A
Over 98% of grades were A*-B
98 students (77%) achieved A* or A grades in at least 3 subjects
40 students (32%) achieved 3 or more A* grades
35 students into Oxford/Cambridge "
So 55% A* (NLCS) v 50% (HB) . Not a vast difference as they have similar academic standards at entry at 11+
NLCS cannot quickly see Oxbridge I suspect they merge the figures in with US as here:
"In 2020, 30 students took up places at Oxford and Cambridge universities, and Ivy League universities or equivalents (University of Columbia, University of Pennsylvania, Princeton, Stanford and UCLA)."
HB 792 pupils. NLCS about 1000.
Actually they are remarkably similar for results and destinations of leavers.