The dormitories were all named after local mountains in the Lake District as follows:
First floor (junior): Dollywaggon, Catbells, Langdale, Helvellyn, Latterbarrow*.
Second floor (senior): Skiddaw, Loughrigg, Bowfell, Kirkstone, Wetherlam, Scafell.
* not always used as a dormitory, depending on school numbers.
You can download floor plans for the school building with the room and dormitory names marked on them:
https://sites.google.com/site/hh1960sphotographs/building-floor-plans
1967 Scafell dorm 1967 Wetherlam dorm