I disagree with @lostaccount In Colorado, students that go to Stanford, Cornell or Carnegie Mellon summer school, and get very good grades, often get into multiple great colleges! Note, students who do summer school are working hard, learning to study with others, completing difficult coding or problems sets and having an amazing summer!
Carnegie Mellon does look carefully at their summer school student’s records as part of the application review. Its true that MIT does not seem to value getting an outstanding grade at a hard college level course like data structures at Carnegie Mellon, but in fact its VERY VALUABLE for Colorado students to meet their competition from the east coast, and get challenged!
The introductory college courses at U of Colorado are way easier typically, than the courses offered at Cornell, Stanford or CMU summer school,where the high school student is mixed in with VERY accomplished high school students and college students at the respective college, and expected to step it up to a much more rapid pace of learning and much harder material, in these six week programs. They are worth every penny for Colorado students, as 1. they figure out IF they can compete, and should they even bother to apply to a top ten college? 2. meet a professor for the first time, get taught more complex material and the credits are transferable to say Georgia Tech. 3. they actually can now get into UIUC, a U of California campus, or Georgia Tech as an OOS applicant, because they have college credits on their application with good grades AND IT MATTERS to Flagship state schools, which are some of the best if one cannot get into MIT!
College credit means a lot for many schools like UIUC and Georgia Tech. MIT, no they don’t care so much but perhaps they are missing something important ? Students need a challenge and this is one way to get challenged.
Most 16 year olds can make little to NO contributions to “research”. Its a lot of BS when high school kids get to do “research” at a college. Its usually very mundane work, except for very unusual circumstances here at U of Colorado.
Note I am an MIT EC, and interview students at Fairview HS some years , where those research projects at U of Colorado are available to every top science student. Only a very exceptional student can put in enough hours over at U of Colorado, that it really helps them very much. Most are not able to dig in that much, not getting much help at U of Colorado, or really in way over their heads, because they are high school students, and they don’t have enough math or scientific background to understand whats going on the lab, but they certainly put in good effort!
Often taking college level classes would be better for that student and prepare them better for freshman year, the shock of the big step up in difficulty from IB to any freshman engineering program. But there is something to be said for “getting excited about science” by hanging in a lab.