We would never pay for a recommendation nor recommend that a client pay for one, but there are lots if valuable alumni networks that we help clients leverage.
I'm not sure how much I can say about activities that help vs those that are now an anti signal from our perspective.
I think this is fairly public knowledge now.
20 years ago playing the violin was a positive signal to elite colleges. Now, that signal is saturated. It seems like every tiger mom wants thier child to be first chair but unfortunately colleges no longer see that as a positive signal (at least from our perspective)
Our clients typically want to track into business, business tech, and pre law, pre med.
From my perspective their are lots of great CS programs out there and lots of demand for CS grads. We work with families who want to track more entrepreneurial or into partnerships rather than into tech leads and project managers if that makes sense.