How hard is it to get into CS major? And what is the difference between IT/IS and CS?

[lkg4answers]

Linking to OP’s previous Chance Me thread for reference.

Chance/Match Me: junior in NYC aiming for CMU

Demographics US permanent resident State/Location of residency: NYC Type of high school: Specialized Public High School Gender/Race/Ethnicity: Female/Asian Other special factors: first gen, student athlete, low-income, ELL (English Language Learner) Intended Major(s) Computer Science Information Technology Information Science GPA, Rank, and Test Scores Unweighted HS GPA: 94.8 (9th & 10th combined; I’m a current junior and my school only does 100-point-scale GPA) Weighted HS GPA: N/A (my school doesn’t do W GPA) Class Rank: N/A (I have no idea about this) ACT/SAT Scores: 1510 (710 for English and 800 for math; planning to retake for a better superscore) Coursework I took AP Chemistry (4) and AP World History (4) in 10th grade and I’m taking AP Statistics, AP CS A, AP Physics 1, AP Macro, AP Micro, AP Chinese this year. I was enrolled in honors for Geometry, Algebra 2, and Precalculus. I took one year of intro cs course at school, where I learned about Dr.Racket, Netlogo, and …