Not sure what the official Rig of the Day would have been but shows up our 'Airy Knees'.
Cannot clearly identify classmates but a couple of 'guesses' In the middle - White shorts, one sock at dip is possibly 'ME'.... with possibly my oppo Jimmy Green transcribing (also with starboard sock at the dip!!). On the right side, Dark Trousers. Gotta be 'Taff' Allen know his 'cap on back of head' anywhere!!