Back Row: Unknown; the next is possibly Lawrence, School Secretary - she  
is in the 1919 picture, which narrows the possible field, where she is  
dressed formally and wearing headgear, unlike all the others present, and  
her perceived age, around  mid fifties, also fits the bill; she served the  
school from 1910 to 1932, when she presumably retired at about the age of  
sixty; Heslop; Rea (though she looks older here than she does later in  
1934); Postlethwaite (very young - about 23 or so here); Harris; Unknown.
Middle Row: A Smith; Fryer; Moncrieff; Beardsell; Wellman; Jones; Dexter  
(booklet says Richards): Nursey.
Front Row: Richards; Baggs; Moorhouse; Unknown; Britts (booklet says  
Dexter).

Of the other names listed in the booklet for the "Unknowns", our  
information shows that Miss Allen and Miss Bolton both left the school in  
1919, which eliminates them from our enquiries insofar as the 1925 picture  
is concerned. This leaves us with Misses Chalmers, Collyer, Gray, K Smith  
and White to identify. Of these, only Miss Gray was employed at the school  
before 1919, and would probably be in that picture also, which possibly  
makes her a candidate for being the person that I have suggested above as  
Miss Lawrence, though that person in the 1925 photo cannot possibly be 36  
years old, unless teaching the Selhurst girls was a task that induced  
premature aging to a spectacular extent.