I also don’t like it. Colleges with very low admission rates and with strongly holistic admissions look very positively on evidence of excellence. That can be in academics, sports, music, robotics, etc.
As a rule, high students achieve excellence through love of of the field or activity and investing of time and effort (and often money). Since all of these are limited, few high school students excel in more than one or two things.
“Spike” implies that a student dues a lot better on one or two things than on other things, and that is not something that is especially interesting in an application.
A student who does really well on multiple things is also attractive, even though they didn’t achieve excellence in any particular one. A students who is in the top 1% but not Valedictorian, built a debate club that did very well at regionals, is first clarinet in school orchestra, but has no external awards, and is a top dancer in the school’s dance troupe, isn’t attractive because they are “well rounded”, but because they show talents in multiple activities. Just engaging in all of those activities will not draw the eyes of an AO. Doing all of those activities and doing them pretty well, though, will attract positive attention.
Again, these colleges love to see Excellence and excellence can be either doing really really well in one or two things, but in can also be doing really well in multiple things. It depends on the student.
@e_w_13’s: your music accomplishments aren’t important because they are a “spike”, they are important because they demonstrate excellence, passion, and hard work. A “spike” just implies that you do an activity a lot better than you do other activities. What your music achievements show is that is that you do this activity better than most other musicians.
That is almost always the case when a student has serious achievements in any field or activity. This has an additional benefit in that no matter where you attend college, your achievement will never be diminished, and the joy that the activity and the achievements have given you and continue to give you is something that no decision by some random AO can take away.
So you should know that you are an awesome whether, whether college AOs appreciate it or not.