Teacher should do more

Sometimes I find articles that support the idea that teachers should be able to bridge the achievement gap despite their student's background and should get to know their students on a personal level. I want to know how I am supposed to accomplish this in a 45 minute period teaching with the CA state standards. Sure I could accomplish more with my students, but how much of my own free time do I need to give up to reach out to parents and students to accomplish this? How is this fair to the teachers?