## How the rankings work

A summary follows.

- For each factor every college has a score between
*0*and*100*, which is closer to*100*the more distiguished a college is for that factor. - Where multiple factors are chosen, colleges are assigned an overall score, which is the average of its scores under those factors.
- Colleges are ranked by their overall scores.

### Scoring colleges for each factor

The best college gets score *100*, the worst *0*. The others are scored depending on how they perform relative to the best and worst colleges. We now explain exactly how this is done.

Each factor is based upon some kind of numerical data for the colleges.

*Examples.* For “old college”, this is the founding date of the colleges. For “close to centre”, this is the distance in metres of the colleges from the corner of Turl Street and High Street. A list of sources of numerical data for the factors is available.

For a given factor, we have a range of numeric values. The worst numeric value and best numeric value are the numeric values of the worst and best colleges for this factor, respectively. The score of a college is the percentage of the way its numeric value lies between the worst numeric value and the best numeric value.

Note that when scores are displayed, they are always rounded to the nearest whole number.

*Example.* The smallest college in 2007/8 was Blackfriars, with 8 undergraduates. The largest was St Catherine’s with 437 undergraduates. Blackfriars gets the score *0*, and St Catherine’s gets *100*. Brasenose College had 345 undergraduates, which is approximately 79% between 8 and 437. Therefore Brasenose College gets a score of *79*.

This method of scoring is not objective, rather it is a measure of how good a college is relative to the others. For this reason we can say the score measures how distinguished a college is for a given factor.

### Scores for multiple factors

Where multiple factors are chosen, colleges are assigned an overall score for those factors. This is the average of its score under those factors.

*Example.* As we saw above, Brasenose has a score of *79* for large number of undergraduates. For old college it has score *63*, and for large undergraduates studying chemistry it scores *36*. Its overall score for these factors is therefore *59*, the average of the scores *79*, *63* and *36*.

Colleges are ranked according to their overall scores for the chosen factors.

We offer some guidance on interpreting these rankings.