Year 11 pupils nervously awaited their GCSE results this morning.
Leading up to results day, Ofqual had predicted increased "volatility" in grades due to government syllabus shake-ups.
Results from Coombe Girls' School show more than a third of all grades were an A or an A*.
The star pupil was Caitlin Dimbleby, who scored 10 A* grades and one A.
Twins Nadia and Yasmine Barakat notched up 17 A* grades and 3 As between them.
Headteacher Deborah Walls said: "I am extremely pleased that the volatility reported in the press has not been evident in our results.
"It’s truly inspiring to see our students achieve these impressive results that reward their hard work and determination."
Joe Cottom, Nathan D'Souza, and Jeremy McAlister celebrate at Coombe Boys' School
Juliette Hough, Carmel Galvin, Sophia Shafiee, William Vine, Stefan Hales, and Lachie Ives celebrate their results at Kingston Grammar School
Kingston Grammar School has reported that half of all its grades were A* this year.
Acting headteacher Mark Wallace said: "We are very proud of our pupils who have achieved quite outstanding results.
"They should be delighted that all their hard work and diligence has paid off so handsomely.
"I would also like to express my gratitude to all my colleagues at KGS who have also worked very hard to make these results possible."
Holly Brown, Olivia Van Buren, Grace Kelly and Anna Olsen celebrate at Kingston Grammar School
Tolworth Girls' School has sent in its results, showing steady improvement.
Its proportion of A* grades has risen from six to 7.2 per cent, with A and B grades also rising.
Headteacher Siobhan Lowe said: "We are delighted with our results overall this year but have concerns with some of the anomalies that we have identified in our English results.
"Surely it should all be about each student, celebrating their hard work and that of our staff."
High-flyers included Rebecca Corbett, who achieved a staggering 11 A* grades and an A.
Southborough High School has achieved 63 per cent A*-C grades, which headteacher Niall Smith said were the school's best ever.
He said: "We are delighted with these results.
"They are a well-earned reward for the hard work, ambition and commitment of our students.
"I would also like to thank staff and parents for their steadfast support."
Six pupils from Tiffin Boys' School achieved a full set of A* grades this year.
The school's results showed a slight dip in the top grades.
This year, 76.7 per cent of all grades were an A or A*, compared to 82.6 per cent last year.
Headteacher Hilda Clarke said: "Everybody was warned - we knew that the grades this year were going to be setting a new set of benchmarking standards.
"We've seen a bit of movement, but perhaps not as much as we were being warned about.
"We're very pleased."
Tiffin girls celebrate their results with headteacher Vanessa Ward and Year 11 head Abigail McDermott
Tiffin Girls' School has reported a drop in A* grades, but a rise of more than 7 percentage points in A grades.
Last year 23.1 per cent of all grades were an A, compared to 30.5 per cent this year.
Head teacher Vanessa Ward said: "They have done superbly well.
"This is a tribute to the hard work and dedication of our students, their teachers and parents."
A banner outside Chessington Community College today
Chessington Community College has followed its excellent A-level results with a record-breaking set of GCSE results.
Principal Rob Niedermaier-Reed said 63 per cent of pupils had achieved five A*-C grades - up from just 25 per cent in 2007.
He said: "Our results are game-changing for our school.
"We're above the national average for the first time in our history.
"I'm able to say to the world: 'This school is transformed.'"
Surbiton High School pupils celebrate with principal Ann Haydon
Surbiton High School has reported a 1.6-percentage point increase in top A and A* grades this year.
Principal Ann Haydon said: "At a time of change in the exam system, I am thrilled that our results have continued to increase.
"I would like to thank the staff for their continuing inspiration."
Cezary Nowak, Patrick Evans, Sean Simmons, Josh Owen, Rayan Hafeel, Joe Godbold and Kieran Cotton, from Richard Challoner, celebrate their results
Richard Challoner has also reported a jump in A-grades, from 16.8 per cent last year to 21 per cent this year.
Head of school Ian O'Brien said: "Once more, students at Richard Challoner School have produced an outstanding set of GCSE results.
"Needless to say, these results wouldn’t be possible without the outstanding hard work and commitment of students and staff alike."
Canbury School has sent in its results. 71 per cent of grades fell between A* and C this year.
Headteacher Louise Clancy said: "We are so very pleased with all the students' results.
"They and their staff have worked really hard, and deserve to be proud of their success."
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