Verified answer

Different graduate schools have different pre-requisite requirements, so the first thing you should do is look at a couple of different graduate programs in CSD and see if you can meet the prerequisites while completing your Psychology major. Most graduate schools don't care what you major in as long as you take the courses you need to get into the program.

It also sounds like you have a pretty narrow view of what clinical psychologists do. There are a lot of specialties within clinical psychology that would allow you to work with people who have disabilities, people who are recovering from injuries, etc. Also, cognitive-behavioral psychology focuses on working with people to develop new skills to deal with whatever issues are preventing them from functioning well in the real world (ie teaching people to deal with phobias, to communicate assertively, etc.). My sister-in-law is a psychologist and she used to oversee programs at an integrated day-care for children with disabilities.

However, if you just want to teach, change your major to education or special ed.

It sounds like your easiest road is to get a teaching credential in Special Education. Jobs in the fields of Psychology without a Phd or Communications are difficult backgrounds to get into the job market. Special ed with an emphasis on speech would open many doors for you.

Of course it depends on the school, and the GPA in your major may count more than your overall GPA. If you can explain your low GPA, you might have a shot, and also you need to ace the GREs. Beyond that getting in will depend on the qualifications of the others applying to the same program.