I have looked at the Birmingham Post (up to 1900) to see if there were mentions of Guildford House. There are several, and the major ones are reproduced below.
The house is first mentioned in 1860, when it is described as being in Gerrard St. In April they are looking for a housemaid and a 15-16 year old boy for a gentleman's school. By May they have found the housemaid, but are still looking for the boy. In August two of their pupils are listed as being successful in the Oxford Middle examinations (which are probably like O-levels, or whatever thing has now replaced them, while in September they are looking for a lad to clean boots and knives and dig in the garden. Maybe the other one couldn't stand it there, or they did not find one in the requisite age group.In December there are two adverts with slightly different wording for the school's reopening after Christmas (below).
In 1862 one person matriculated at the University of London exams, Algernon Ewen, presumably the owners son, and in 1863 it was noted that "more than one" pupils from the school took the Oxford local exams.
In January 1864 an advert for "Cambridge House school, Hagley Road is placed, which states it has removed from Guioldford House (below). I would guess it moved over the Christmas holidays.
By February 1865 William Bodill occupies the house, and the death of his son is recorded. However in july 1865 there is a report (below) on the inquest into the death of William and committal of two men responsible for his manslaughter as a result of injuries received on 21st May when he tried to evict them from the grounds of Guildford House. It must be said that William does appear to have not been completely blameless. However, presumably because william at least partly brought it on himself, the charge was not proceeded with and a few days later they were discharged.
Finally in August 1869 there is the report of the marriage of the daughter of H N E McEvoy of Guildford House