Lavington School headteacher Sarah Lowkis said her pupils' results had exceeded expectations at a time of great educational turmoil.
Of the KCC results, 86.7 per cent of students gained five GCSEs at A* to C, 82 per cent achieved that with English and Maths.
"I would like to take this opportunity to wish all of our wonderful year 11 students all the very best for the future, whether they are joining us at our outstanding sixth form or continuing on to pastures new".
Jenny Brown, headmistress at the school, said: "Obviously we're incredibly proud of this year's results, which show what can be achieved through hard work and a lot of stamina".
"We knew that students would need additional support so we introduced "masterclasses" to help them to get the best out of their revision time".
"For example, Keaton Wood deserves special recognition having achieved 11 GCSEs at A*-C, including seven at A* or A grade or equivalent".
Of the grades awarded to the 142 pupils who make up the 2017 cohort, 98 per cent were A*, A or B. Boys and girls performed exceptionally well.
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More than half the year group gained at least 6 A* grades; just under a half gained at least 7 A*s; more than one third gained at least 8 A*s; and nearly one quarter gained at least 9 A*s.
Headmaster, Nick Seward, commented: "It is a tremendous testament to the quality of teaching at KHS, and the ethos amongst our pupils, that we have achieved record results at both GCSE and A Level for the second year running".
Claire Robins, head teacher of Sir John Lawes School, congratulated students opening their GCSE results, as the school saw an increase in the number of students achieving the very highest grades.
"I would like to thank all of the staff, parents, governors and, most importantly, the students themselves, for the role they play in making our school into the magnificently successful learning environment that it is".
More than a third of the grades obtained by students at the school this year were at the highest grades including several students who achieved three 9s in English and Maths.
More than 85 per cent of students achieved five or more GCSEs at A*-C and 64 per cent achieved a level 5 or more in both English and maths. An impressive 25 out of 26 subjects achieved an exceptional 100 per cent pass rate, and the top grades have improved this year with 47 per cent of students achieving A*-Bs compared with last year's 41%.
"I would also like to pay tribute to the hard work and dedication of The Bridge Academy staff - congratulations to all involved".
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