I did go away from home for college, and it is important to state the obvious - the autistic child has a family that has to put up with the kid. In college, the autistic child has to work harder to fit in and avoid isolation with the cliques and petty gossiping Role-playing such as camps and high school socializing helps in preparation.
I inquired if people were measured on individual information processing rate. I found nothing. College admission was based on test scores, grades, interviews (one-on-one), activities but not necessarily the information processing skill that I call “on your feet.”
Thus, if you have the money and desire, the autistic person can be accepted into a college and participate in the academic world.
The autistic student should have a passion for his studying, go to a school that is strong in its area of interest. Hopefully, interest in the subject matter can help overcome the difficulty in listening to lectures and social interaction in class. Studying, write things down, memorize for two hours, take a break, walk around to let things sink in, start again. Really prioritize what you want to do and be patient, willing to take a lot more time, say twice the time to learn versus the typical good student to prepare for a college examination. Do one task at a time by concentrated effort, do not multi-task. Patience is a crucial virtue for the autistic person - the ability to slowly grind their way to academic results.
As a student, go on the offensive – work hard early, get off to a good start. You can out work the competition for grades and then if they work as hard, they will do better but at least you have your earlier edge (grading on a curve). My point is that it is harder to come from behind because those already behind may work harder to catch up also, and assuming the autism handicap, the others would have an edge with comparable.
For me, it was easier to socialize in small groups of 1 to 2 other people instead of the larger group. Play individual sports if possible instead of team sports with competition an easier way for me to interact with people. Autistic people may be able to play video games or chess - I knew chess but I was not a chess master. Take walks or bike rides, even alone to relax, or enjoy music as described next.
It takes giving to make friends. A challenge of college socializing is knowing that the autistic person has to help or do more favors for their peers compared to the outgoing person who makes friends with the humor and the smile. Do activities with others that you like to do. I do have examples of losing friends by being too honest, but I cannot name names on the Web and I got frustrated and needed more patience at the time.
Smiling when you can't, being unselfish when you need the time to take care of yourself, taking more time to do work, I do what I can do to survive. In hindsight, I should have gone to a more career oriented college, but I did have some highlights such as studying abroad and some college activities.
College is one of the riskiest periods in one's life. You are spending money and time to complete a 2-year or 4-year problem. Dangers such as alcohol or drug abuse, depression, a fight that goes bad, a bad course, a failing grade, whatever, can turn 4 years of college into 5 or 6. For me, I avoided drugs and alcohol, but had many sad moments, had to drop a course, Pascal programming, almost dropped out, but willed myself to graduate on time, but college was intense and I felt burned out at graduation.