School Photo for dating please

[nashua]

Thank you Japeflakes 

[nashua]

I have now discovered that this photo is from the school in Alderton Wiltshire and therefore would include my grandfather born 1895, not grandmother as originally thought. I have attached the youngest photo I have of him and wonder if anyone could hazard a guess as to which child he is. His other brothers born 1896 and 1903 and sister born 1901 may also be included.