jane's ire at having to read victorian literature

Analyze the author’s use of irony in describing Mr. Brocklehurst’s family in the second passage. How does the author contrast this description with Mr. Brocklehurst’s lecture to Miss Temple to provide social commentary on perceptions of class during this time? 

Brontë presents irony in her display of Brocklehurst's outrage at the supposed wastefulness and immodesty of the pupils of Lowood, while simultaneously showing Brocklehurst's family to be attired in fine, fancy, haughty dress. Brontë emphasizes this by using a long, drawn out description of Brocklehurst's daughters and wife, narrating their clothes. She also takes great pains to describe the various forms of curls present on each one, describing the curled tresses of the daughters, and the false front, adorned with curls.  This show's the hypocrisy present in Brocklehurst's lecture of Christian dogma. By calling the girls to a life of ascetic and material repression, while simultaneously outfitting his spawn in decadent clothing, Brontë is presenting Brocklehurst as a sanctimonious pietist, who cares only in spreading his doctrine when he views it convenient. 
This presentation of Brocklehurst's false religion can show Brontë's veiled barbs at the classist nature of Victorian religion. Brontë presents the conventions of anglican religion as a tool that the upper middle- and lower aristocratic class can use to subjugate the poor. By leading and baiting the downtrodden with Christian promise, and the reward of heaven, they are able to keep them content with their low state in society. The usage of doctrine is also convenient when used to compare the suffering of Christ and the Israelites to the poor class, making them feel more religious and holy in their daily suffering.