Holden came to Mr. Spencers room to ind him sitting on his bed in a bathrobe. Mr. Spencer spoke to Holden about him leaving the school in Pencey and how he must play according to the rules.
This shows how authority figures view Holden, and the way he views them in return. What we see is primarily a big lack of understanding. Mr. Spencer can't understand what's wrong with Holden, and he certainly doesn't know how to help him. His only strategy is too lecture Holden about his future.
Mr. Spencer continues to desperately try and help Holden to understand that he needs to think about his future. Holden doesn't have many concerns about the fact that he has gotten expelled or if he continues to fail in school he will have less opportunities in life.