Key to photograph. Please help identify the unknowns

Back Row: C.Chubb, M.Bushell, unknown, G.Sheridan, unknown, M.Parker 4th Row: unknown, M.Stewart, unknown, unknown, unknown, J.Holt, J.Craythorne 3rd Row: unknown, M.Donaghue, S.Baldwin, unknown, J.Platt, B.Jackson, S.Vost 2nd Row: unknown, B.Mercer, J.Crook, Teacher?, Christine ?, unknown, A.Ashburner Front Row: C.Rasdall, L.Husselberry, J.Rubery, C.Russell