Dr Challoner's High School is the best secondary school in Buckinghamshire, the Government's latest league tables show.

The school achieved a strong score in the Progress 8 measure, used to assess how much pupils have improved during their time at the school, for the 2018-19 academic year.

It replaces Beaconsfield High School as the highest-ranking school in Buckinghamshire – though last year’s winner remains one of the best in the area.

Wycombe High School also performed well.

Dr Challoner's High School, in Amersham, is an academy converter which accepts girls aged 11 to 18.

It has 1,224 registered pupils. Of them, 153 were eligible to take GCSEs last year.

Under Progress 8, pupils are measured across their scores in eight GCSEs, including core subjects (English, maths and sciences), and their best scores in other, chosen subjects.

These scores are compared to their performance in Key Stage 2 exams, and used to calculate the amount of value the school is adding to a child's education, measured by the institution's Progress 8 score.

Schools with missing or incomplete data were excluded from the rankings.

In Dr Challoner's High School, all pupils hit a strong target, grade 5 to 9, in English and maths.

As a result, the school achieved a Progress 8 score of 1.07 – Buckinghamshire's highest. Scores of above and below zero are better and worse than average, respectively.

The top schools in Buckinghamshire, according to their Progress 8 scores, were:

1) Dr Challoner's High School (Progress 8 score: 1.07)

2) Wycombe High School (0.82)

3) Beaconsfield High School (0.81)

4) Waddesdon Church of England School (0.78)

5) Dr Challoner's Grammar School (0.73)

6) The Royal Grammar School, High Wycombe (0.68)

7) Chesham Grammar School (0.62)

8) Aylesbury High School (0.61)

9) Sir Henry Floyd Grammar School (0.58)

10) Amersham School (0.57)