Why did Matthew Arnold become a school inspector in 1851?

Matthew Arnold accepted the position of inspector of schools in 1851 primarily to secure the financial income necessary for his marriage to Frances Lucy Wightman, which took place in June of that year.1

He obtained the appointment through the influence of Lord Lansdowne, for whom he had previously served as a private secretary. This role became his primary occupation for the remainder of his career, during which he traveled extensively to evaluate education both within the British provinces and across several European nations.12